Brennan Towry

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news 9 Posts 3 Threads

since Oct 12, 2021

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Recent posts by Brennan Towry

Need help with debugging error CS0165 on C#

If you are talking about the line:

You never initialized or assigned the variable, so when you give the Console the var, it will write null. Try this when you call the variable:

or

Also, just a side note, if you are trying to make a list (I infer from the "Names" part of your variable names), try looking into using an array, a list, or even a dictionary.

3 years ago

C# and .NET

Taking in keyboard and mouse input. Giving the computer controller output.

So I have a singleplayer game on XBOX GamePass for PC that only supports a controller. I am really bad at a controller, and would like to use a keyboard instead. I see no harm as it is a singleplayer game. I can make the code for key binding keyboard keys to controller buttons, but I don't know how to receive keyboard and mouse input, and I don't know how to tell the computer that a controller in plugged in, and that it is receiving controller input. I also don't know how to make the app receive input while it is not the selected application, as I will be playing on the browser, not playing on this app. Any help is appreciated, thanks!

3 years ago

C# and .NET

Need help editing Java ByteCode.

In response to Matthew Bendford, this launcher will be able to run my custom Minecraft mods that improve performance by writing over the majority of the Minecraft code, however, this piece of code is overriding the file changes, it thinks that the files are not updated because they are not the same. I tried deleting the file, but that would mean rewriting a lot more stuff. It seems that the best option here is to change the file. Please do let me know if that is against Mojang's EULA! If it is, do you have another solution to the problem?

3 years ago

Java in General

Need help editing Java ByteCode.

What function two should look like:

protected String decompressAsset(final File localAsset, final File localCompressed) throws IOException {
       this.status = Status.EXTRACTING;
       final OutputStream outputStream = FileUtils.openOutputStream(localAsset);
       final InputStream inputStream = new GZIPInputStream(FileUtils.openInputStream(localCompressed));
       String hash;
       try {
           hash = Downloadable.copyAndDigest(inputStream, outputStream, "SHA", 40);
       }
       finally {
           IOUtils.closeQuietly(outputStream);
           IOUtils.closeQuietly(inputStream);
       }
       this.status = Status.DOWNLOADING;
       if (hash.equalsIgnoreCase(this.asset.getHash())) {
           return "Had local compressed asset, unpacked successfully and hash matched";
       }
       /*
       *** Delete:
       else {
           FileUtils.deleteQuietly(localAsset);
           throw new RuntimeException("Had local compressed asset but unpacked hash did not match (expected " + this.asset.getHash() + " but had " + hash + ")");
       }
       Replace:
       return "Had local compressed asset, unpacked successfully and hash matched";
       */
   }

What function two looks like:

aload_0
getstatic com/mojang/launcher/updater/download/assets/AssetDownloadable$Status/EXTRACTING Lcom/mojang/launcher/updater/download/assets/AssetDownloadable$Status;
putfield com/mojang/launcher/updater/download/assets/AssetDownloadable/status Lcom/mojang/launcher/updater/download/assets/AssetDownloadable$Status;
aload_1
invokestatic org/apache/commons/io/FileUtils/openOutputStream(Ljava/io/File;)Ljava/io/FileOutputStream;
astore_3
new java/util/zip/GZIPInputStream
dup
aload_2
invokestatic org/apache/commons/io/FileUtils/openInputStream(Ljava/io/File;)Ljava/io/FileInputStream;
invokespecial java/util/zip/GZIPInputStream/<init>(Ljava/io/InputStream;)V
astore 4
aload 4
aload_3
ldc "SHA"
bipush 40
invokestatic com/mojang/launcher/updater/download/assets/AssetDownloadable/copyAndDigest(Ljava/io/InputStream;Ljava/io/OutputStream;Ljava/lang/String;I)Ljava/lang/String;
astore 5
aload_3
invokestatic org/apache/commons/io/IOUtils/closeQuietly(Ljava/io/OutputStream;)V
aload 4
invokestatic org/apache/commons/io/IOUtils/closeQuietly(Ljava/io/InputStream;)V
goto 31
astore 6
aload_3
invokestatic org/apache/commons/io/IOUtils/closeQuietly(Ljava/io/OutputStream;)V
aload 4
invokestatic org/apache/commons/io/IOUtils/closeQuietly(Ljava/io/InputStream;)V
aload 6
athrow
aload_0
getstatic com/mojang/launcher/updater/download/assets/AssetDownloadable$Status/DOWNLOADING Lcom/mojang/launcher/updater/download/assets/AssetDownloadable$Status;
putfield com/mojang/launcher/updater/download/assets/AssetDownloadable/status Lcom/mojang/launcher/updater/download/assets/AssetDownloadable$Status;
aload 5
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/getHash()Ljava/lang/String;
invokevirtual java/lang/String/equalsIgnoreCase(Ljava/lang/String;)Z
ifeq 42
ldc "Had local compressed asset, unpacked successfully and hash matched"
areturn
aload_1
invokestatic org/apache/commons/io/FileUtils/deleteQuietly(Ljava/io/File;)Z
pop
new java/lang/RuntimeException
dup
new java/lang/StringBuilder
dup
invokespecial java/lang/StringBuilder/<init>()V
ldc "Had local compressed asset but unpacked hash did not match (expected "
invokevirtual java/lang/StringBuilder/append(Ljava/lang/String;)Ljava/lang/StringBuilder;
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/getHash()Ljava/lang/String;
invokevirtual java/lang/StringBuilder/append(Ljava/lang/String;)Ljava/lang/StringBuilder;
ldc " but had "
invokevirtual java/lang/StringBuilder/append(Ljava/lang/String;)Ljava/lang/StringBuilder;
aload 5
invokevirtual java/lang/StringBuilder/append(Ljava/lang/String;)Ljava/lang/StringBuilder;
ldc ")"
invokevirtual java/lang/StringBuilder/append(Ljava/lang/String;)Ljava/lang/StringBuilder;
invokevirtual java/lang/StringBuilder/toString()Ljava/lang/String;
invokespecial java/lang/RuntimeException/<init>(Ljava/lang/String;)V
athrow

3 years ago

Java in General

Need help editing Java ByteCode.

aload 5
invokevirtual java/net/HttpURLConnection/getInputStream()Ljava/io/InputStream;
aload_0
invokevirtual com/mojang/launcher/updater/download/assets/AssetDownloadable/getMonitor()Lcom/mojang/launcher/updater/download/ProgressContainer;
invokespecial com/mojang/launcher/updater/download/MonitoringInputStream/<init>(Ljava/io/InputStream;Lcom/mojang/launcher/updater/download/ProgressContainer;)V
astore 7
new java/io/FileOutputStream
dup
aload_2
invokespecial java/io/FileOutputStream/<init>(Ljava/io/File;)V
astore 8
aload 7
aload 8
ldc "SHA"
bipush 40
invokestatic com/mojang/launcher/updater/download/assets/AssetDownloadable/copyAndDigest(Ljava/io/InputStream;Ljava/io/OutputStream;Ljava/lang/String;I)Ljava/lang/String;
astore 9
aload 9
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/getCompressedHash()Ljava/lang/String;
invokevirtual java/lang/String/equalsIgnoreCase(Ljava/lang/String;)Z
ifeq 186
aload_0
aload_1
aload_2
invokevirtual com/mojang/launcher/updater/download/assets/AssetDownloadable/decompressAsset(Ljava/io/File;Ljava/io/File;)Ljava/lang/String;
areturn
aload_2
invokestatic org/apache/commons/io/FileUtils/deleteQuietly(Ljava/io/File;)Z
pop
new java/lang/RuntimeException
dup
ldc "Hash did not match downloaded compressed asset (Expected %s, downloaded %s)"
iconst_2
anewarray java/lang/Object
dup
iconst_0
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/getCompressedHash()Ljava/lang/String;
aastore
dup
iconst_1
aload 9
aastore
invokestatic java/lang/String/format(Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
invokespecial java/lang/RuntimeException/<init>(Ljava/lang/String;)V
athrow
new java/lang/RuntimeException
dup
new java/lang/StringBuilder
dup
invokespecial java/lang/StringBuilder/<init>()V
ldc "Server responded with "
invokevirtual java/lang/StringBuilder/append(Ljava/lang/String;)Ljava/lang/StringBuilder;
iload 6
invokevirtual java/lang/StringBuilder/append(I)Ljava/lang/StringBuilder;
invokevirtual java/lang/StringBuilder/toString()Ljava/lang/String;
invokespecial java/lang/RuntimeException/<init>(Ljava/lang/String;)V
athrow
aload_0
aload_3
invokevirtual com/mojang/launcher/updater/download/assets/AssetDownloadable/makeConnection(Ljava/net/URL;)Ljava/net/HttpURLConnection;
astore 5
aload 5
invokevirtual java/net/HttpURLConnection/getResponseCode()I
istore 6
iload 6
bipush 100
idiv
iconst_2
if_icmpne 282
aload_0
aload 5
invokevirtual com/mojang/launcher/updater/download/assets/AssetDownloadable/updateExpectedSize(Ljava/net/HttpURLConnection;)V
new com/mojang/launcher/updater/download/MonitoringInputStream
dup
aload 5
invokevirtual java/net/HttpURLConnection/getInputStream()Ljava/io/InputStream;
aload_0
invokevirtual com/mojang/launcher/updater/download/assets/AssetDownloadable/getMonitor()Lcom/mojang/launcher/updater/download/ProgressContainer;
invokespecial com/mojang/launcher/updater/download/MonitoringInputStream/<init>(Ljava/io/InputStream;Lcom/mojang/launcher/updater/download/ProgressContainer;)V
astore 7
new java/io/FileOutputStream
dup
aload_1
invokespecial java/io/FileOutputStream/<init>(Ljava/io/File;)V
astore 8
aload 7
aload 8
ldc "SHA"
bipush 40
invokestatic com/mojang/launcher/updater/download/assets/AssetDownloadable/copyAndDigest(Ljava/io/InputStream;Ljava/io/OutputStream;Ljava/lang/String;I)Ljava/lang/String;
astore 9
aload 9
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/getHash()Ljava/lang/String;
invokevirtual java/lang/String/equalsIgnoreCase(Ljava/lang/String;)Z
ifeq 261
ldc "Downloaded asset and hash matched successfully"
areturn
aload_1
invokestatic org/apache/commons/io/FileUtils/deleteQuietly(Ljava/io/File;)Z
pop
new java/lang/RuntimeException
dup
ldc "Hash did not match downloaded asset (Expected %s, downloaded %s)"
iconst_2
anewarray java/lang/Object
dup
iconst_0
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/getHash()Ljava/lang/String;
aastore
dup
iconst_1
aload 9
aastore
invokestatic java/lang/String/format(Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
invokespecial java/lang/RuntimeException/<init>(Ljava/lang/String;)V
athrow
new java/lang/RuntimeException
dup
new java/lang/StringBuilder
dup
invokespecial java/lang/StringBuilder/<init>()V
ldc "Server responded with "
invokevirtual java/lang/StringBuilder/append(Ljava/lang/String;)Ljava/lang/StringBuilder;
iload 6
invokevirtual java/lang/StringBuilder/append(I)Ljava/lang/StringBuilder;
invokevirtual java/lang/StringBuilder/toString()Ljava/lang/String;
invokespecial java/lang/RuntimeException/<init>(Ljava/lang/String;)V
athrow

3 years ago

Java in General

Need help editing Java ByteCode.

What function one looks like:

aload_0
getstatic com/mojang/launcher/updater/download/assets/AssetDownloadable$Status/DOWNLOADING Lcom/mojang/launcher/updater/download/assets/AssetDownloadable$Status;
putfield com/mojang/launcher/updater/download/assets/AssetDownloadable/status Lcom/mojang/launcher/updater/download/assets/AssetDownloadable$Status;
aload_0
dup
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/numAttempts I
iconst_1
iadd
putfield com/mojang/launcher/updater/download/assets/AssetDownloadable/numAttempts I
aload_0
invokevirtual com/mojang/launcher/updater/download/assets/AssetDownloadable/getTarget()Ljava/io/File;
astore_1
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/hasCompressedAlternative()Z
ifeq 27
new java/io/File
dup
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/destination Ljava/io/File;
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/getCompressedHash()Ljava/lang/String;
invokestatic com/mojang/launcher/updater/download/assets/AssetDownloadable/createPathFromHash(Ljava/lang/String;)Ljava/lang/String;
invokespecial java/io/File/<init>(Ljava/io/File;Ljava/lang/String;)V
goto 28
aconst_null
astore_2
aload_0
invokevirtual com/mojang/launcher/updater/download/assets/AssetDownloadable/getUrl()Ljava/net/URL;
astore_3
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/hasCompressedAlternative()Z
ifeq 52
new java/net/URL
dup
new java/lang/StringBuilder
dup
invokespecial java/lang/StringBuilder/<init>()V
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/urlBase Ljava/lang/String;
invokevirtual java/lang/StringBuilder/append(Ljava/lang/String;)Ljava/lang/StringBuilder;
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/getCompressedHash()Ljava/lang/String;
invokestatic com/mojang/launcher/updater/download/assets/AssetDownloadable/createPathFromHash(Ljava/lang/String;)Ljava/lang/String;
invokevirtual java/lang/StringBuilder/append(Ljava/lang/String;)Ljava/lang/StringBuilder;
invokevirtual java/lang/StringBuilder/toString()Ljava/lang/String;
invokespecial java/net/URL/<init>(Ljava/lang/String;)V
goto 53
aconst_null
astore 4
aload_0
aload_1
invokevirtual com/mojang/launcher/updater/download/assets/AssetDownloadable/ensureFileWritable(Ljava/io/File;)V
aload_2
ifnull 62
aload_0
aload_2
invokevirtual com/mojang/launcher/updater/download/assets/AssetDownloadable/ensureFileWritable(Ljava/io/File;)V
aload_1
invokevirtual java/io/File/isFile()Z
ifeq 98
aload_1
invokestatic org/apache/commons/io/FileUtils/sizeOf(Ljava/io/File;)J
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/getSize()J
lcmp
ifne 74
ldc "Have local file and it's the same size; assuming it's okay!"
areturn
getstatic com/mojang/launcher/updater/download/assets/AssetDownloadable/LOGGER Lorg/apache/logging/log4j/Logger;
ldc "Had local file but it was the wrong size... had {} but expected {}"
iconst_2
anewarray java/lang/Object
dup
iconst_0
aload_1
invokestatic org/apache/commons/io/FileUtils/sizeOf(Ljava/io/File;)J
invokestatic java/lang/Long/valueOf(J)Ljava/lang/Long;
aastore
dup
iconst_1
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/getSize()J
invokestatic java/lang/Long/valueOf(J)Ljava/lang/Long;
aastore
invokeinterface org/apache/logging/log4j/Logger/warn(Ljava/lang/String;[Ljava/lang/Object;)V 3
aload_1
invokestatic org/apache/commons/io/FileUtils/deleteQuietly(Ljava/io/File;)Z
pop
aload_0
getstatic com/mojang/launcher/updater/download/assets/AssetDownloadable$Status/DOWNLOADING Lcom/mojang/launcher/updater/download/assets/AssetDownloadable$Status;
putfield com/mojang/launcher/updater/download/assets/AssetDownloadable/status Lcom/mojang/launcher/updater/download/assets/AssetDownloadable$Status;
aload_2
ifnull 137
aload_2
invokevirtual java/io/File/isFile()Z
ifeq 137
aload_2
ldc "SHA"
bipush 40
invokestatic com/mojang/launcher/updater/download/assets/AssetDownloadable/getDigest(Ljava/io/File;Ljava/lang/String;I)Ljava/lang/String;
astore 5
aload 5
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/getCompressedHash()Ljava/lang/String;
invokevirtual java/lang/String/equalsIgnoreCase(Ljava/lang/String;)Z
ifeq 119
aload_0
aload_1
aload_2
invokevirtual com/mojang/launcher/updater/download/assets/AssetDownloadable/decompressAsset(Ljava/io/File;Ljava/io/File;)Ljava/lang/String;
areturn
getstatic com/mojang/launcher/updater/download/assets/AssetDownloadable/LOGGER Lorg/apache/logging/log4j/Logger;
ldc "Had local compressed but it was the wrong hash... expected {} but had {}"
iconst_2
anewarray java/lang/Object
dup
iconst_0
aload_0
getfield com/mojang/launcher/updater/download/assets/AssetDownloadable/asset Lcom/mojang/launcher/updater/download/assets/AssetIndex$AssetObject;
invokevirtual com/mojang/launcher/updater/download/assets/AssetIndex$AssetObject/getCompressedHash()Ljava/lang/String;
aastore
dup
iconst_1
aload 5
aastore
invokeinterface org/apache/logging/log4j/Logger/warn(Ljava/lang/String;[Ljava/lang/Object;)V 3
aload_2
invokestatic org/apache/commons/io/FileUtils/deleteQuietly(Ljava/io/File;)Z
pop
aload 4
ifnull 219
aload_2
ifnull 219
aload_0
aload 4
invokevirtual com/mojang/launcher/updater/download/assets/AssetDownloadable/makeConnection(Ljava/net/URL;)Ljava/net/HttpURLConnection;
astore 5
aload 5
invokevirtual java/net/HttpURLConnection/getResponseCode()I
istore 6
iload 6
bipush 100
idiv
iconst_2
if_icmpne 207
aload_0
aload 5
invokevirtual com/mojang/launcher/updater/download/assets/AssetDownloadable/updateExpectedSize(Ljava/net/HttpURLConnection;)V
new com/mojang/launcher/updater/download/MonitoringInputStream
dup

3 years ago

Java in General

Need help editing Java ByteCode.

Hello! I am making a Custom Minecraft Launcher as a side project, and ran into a problem. Compiling the Jar file can take multiple hours (its really big), and when I had tested the jar, it didn't run quite right. As this is a project to expand my skills in Java, I would like to try to find and fix the problem myself. However, I don't want to decompile, edit, and recompile the file, as this will take to long only to edit a few lines. I have downloaded JBE and want to use it to edit the file. However, I have noticed that the code is in Java Bytecode, and not Java. I don't want to have to learn the whole language just to edit a few lines. Could someone that knows Java Bytecode please help me edit the file? (also sorry Jesse, but there will be way to many Very Long Lines to edit) Also let me know if you need any more info!

What function one should look like:

public String download() throws IOException {
       this.status = Status.DOWNLOADING;
       ++this.numAttempts;
       final File localAsset = this.getTarget();
       final File localCompressed = this.asset.hasCompressedAlternative() ? new File(this.destination, createPathFromHash(this.asset.getCompressedHash())) : null;
       final URL remoteAsset = this.getUrl();
       final URL remoteCompressed = this.asset.hasCompressedAlternative() ? new URL(this.urlBase + createPathFromHash(this.asset.getCompressedHash())) : null;
       this.ensureFileWritable(localAsset);
       if (localCompressed != null) {
           this.ensureFileWritable(localCompressed);
       }
       if (localAsset.isFile()) {
           if (FileUtils.sizeOf(localAsset) == this.asset.getSize()) {
               return "Have local file and it's the same size; assuming it's okay!";
           }
           /*
           *** Delete:
           LOGGER.warn("Had local file but it was the wrong size... had {} but expected {}", new Object[]{FileUtils.sizeOf(localAsset), this.asset.getSize()});
           FileUtils.deleteQuietly(localAsset);
           this.status = com.mojang.launcher.updater.download.assets.AssetDownloadable.Status.DOWNLOADING;
           Replace With
           return "Have local file and it's the same size; assuming it's okay!";
           */
       }
       if (localCompressed != null && localCompressed.isFile()) {
           final String localCompressedHash = Downloadable.getDigest(localCompressed, "SHA", 40);
           if (localCompressedHash.equalsIgnoreCase(this.asset.getCompressedHash())) {
               return this.decompressAsset(localAsset, localCompressed);
           }
           /*
           *** Delete:
           LOGGER.warn("Had local compressed but it was the wrong hash... expected {} but had {}", new Object[]{this.asset.getCompressedHash(), localCompressedHash});
           FileUtils.deleteQuietly(localCompressed);
           Replace:
           return this.decompressAsset(localAsset, localCompressed);
           */
       }
       if (remoteCompressed != null && localCompressed != null) {
           final HttpURLConnection connection = this.makeConnection(remoteCompressed);
           final int status = connection.getResponseCode();
           if (status / 100 != 2) {
               throw new RuntimeException("Server responded with " + status);
           }
           this.updateExpectedSize(connection);
           final InputStream inputStream = new MonitoringInputStream(connection.getInputStream(), this.getMonitor());
           final FileOutputStream outputStream = new FileOutputStream(localCompressed);
           final String hash = Downloadable.copyAndDigest(inputStream, outputStream, "SHA", 40);
           if (hash.equalsIgnoreCase(this.asset.getCompressedHash())) {
               return this.decompressAsset(localAsset, localCompressed);
           }
           /*
           *** Delete:
           else {
                   FileUtils.deleteQuietly(localCompressed);
                   throw new RuntimeException(String.format("Hash did not match downloaded compressed asset (Expected %s, downloaded %s)", this.asset.getCompressedHash(), hash));
           }
           Replace:
           return this.decompressAsset(localAsset, localCompressed);
           */
       }
       else {
           final HttpURLConnection connection = this.makeConnection(remoteAsset);
           final int status = connection.getResponseCode();
           if (status / 100 != 2) {
               throw new RuntimeException("Server responded with " + status);
           }
           this.updateExpectedSize(connection);
           final InputStream inputStream = new MonitoringInputStream(connection.getInputStream(), this.getMonitor());
           final FileOutputStream outputStream = new FileOutputStream(localAsset);
           final String hash = Downloadable.copyAndDigest(inputStream, outputStream, "SHA", 40);
           if (hash.equalsIgnoreCase(this.asset.getHash())) {
               return "Downloaded asset and hash matched successfully";
           }
           /*
           *** Delete:
           else {
                   FileUtils.deleteQuietly(localAsset);
                   throw new RuntimeException(String.format("Hash did not match downloaded asset (Expected %s, downloaded %s)", this.asset.getHash(), hash));
           }
           Replace:
           return "Downloaded asset and hash matched successfully";
           */
       }
   }

3 years ago

Java in General

Imported package that has a error, don't know how to fix.

Thanks everyone for your helpful responses. My coworker sent me an email telling me that this file is outdated and edited for a different, older project. He gave me the correct file. I don't know Java all to well, i'm the C++ C# integration guy.

In response to Jesse Silverman, Im not sure what you are asking me to do, if you could share a link to an example, or give a post of an example, that would be nice!

3 years ago

Java in General

Imported package that has a error, don't know how to fix.

So I imported a package into my project and it has this error on line 125: There is no default constructor available in 'com.google.common.collect.StandardTable.Row'

And this error on line 126: Call to 'TreeBasedTable.this.super()' must be first statement in constructor body

Can anyone help me, cause this code goes way over my head.

Code:

package com.google.common.collect;
import java.util.NoSuchElementException;
import javax.annotation.Nullable;
import java.io.Serializable;
import java.util.Collection;
import java.util.Set;
import com.google.common.base.Function;
import java.util.Iterator;
import java.util.Map;
import java.util.SortedSet;
import com.google.common.base.Supplier;
import java.util.SortedMap;
import java.util.TreeMap;
import com.google.common.base.Preconditions;
import java.util.Comparator;
import com.google.common.annotations.Beta;
import com.google.common.annotations.GwtCompatible;
@GwtCompatible(serializable = true)
@Beta
public class TreeBasedTable<R, C, V> extends StandardRowSortedTable<R, C, V>
{
   private final Comparator<? super C> columnComparator;
   private static final long serialVersionUID = 0L;
   
   public static <R extends Comparable, C extends Comparable, V> TreeBasedTable<R, C, V> create() {
       return new TreeBasedTable<R, C, V>(Ordering.natural(), Ordering.natural());
   }
   
   public static <R, C, V> TreeBasedTable<R, C, V> create(final Comparator<? super R> rowComparator, final Comparator<? super C> columnComparator) {
       Preconditions.checkNotNull(rowComparator);
       Preconditions.checkNotNull(columnComparator);
       return new TreeBasedTable<R, C, V>(rowComparator, columnComparator);
   }
   
   public static <R, C, V> TreeBasedTable<R, C, V> create(final TreeBasedTable<R, C, ? extends V> table) {
       final TreeBasedTable<R, C, V> result = new TreeBasedTable<R, C, V>(table.rowComparator(), table.columnComparator());
       result.putAll((Table)table);
       return result;
   }
   
   TreeBasedTable(final Comparator<? super R> rowComparator, final Comparator<? super C> columnComparator) {
       super(new TreeMap(rowComparator), new Factory(columnComparator));
       this.columnComparator = columnComparator;
   }
   
   public Comparator<? super R> rowComparator() {
       return this.rowKeySet().comparator();
   }
   
   public Comparator<? super C> columnComparator() {
       return this.columnComparator;
   }
   
   @Override
   public SortedMap<C, V> row(final R rowKey) {
       return new TreeRow(rowKey);
   }
   
   @Override
   public SortedSet<R> rowKeySet() {
       return super.rowKeySet();
   }
   
   @Override
   public SortedMap<R, Map<C, V>> rowMap() {
       return super.rowMap();
   }
   
   @Override
   Iterator<C> createColumnKeyIterator() {
       final Comparator<? super C> comparator = this.columnComparator();
       final Iterator<C> merged = (Iterator<C>)Iterators.mergeSorted(Iterables.transform((Iterable<Map<C, V>>)this.backingMap.values(), (Function<? super Map<C, V>, ? extends Iterator<?>>)new Function<Map<C, V>, Iterator<C>>() {
           @Override
           public Iterator<C> apply(final Map<C, V> input) {
               return input.keySet().iterator();
           }
       }), (Comparator<? super Object>)comparator);
       return new AbstractIterator<C>() {
           C lastValue;
           
           @Override
           protected C computeNext() {
               while (merged.hasNext()) {
                   final C next = merged.next();
                   final boolean duplicate = this.lastValue != null && comparator.compare(next, this.lastValue) == 0;
                   if (!duplicate) {
                       return this.lastValue = next;
                   }
               }
               this.lastValue = null;
               return this.endOfData();
           }
       };
   }
   
   private static class Factory<C, V> implements Supplier<TreeMap<C, V>>, Serializable
   {
       final Comparator<? super C> comparator;
       private static final long serialVersionUID = 0L;
       
       Factory(final Comparator<? super C> comparator) {
           this.comparator = comparator;
       }
       
       @Override
       public TreeMap<C, V> get() {
           return new TreeMap<C, V>(this.comparator);
       }
   }
   
   private class TreeRow extends Row implements SortedMap<C, V>
   {
       @Nullable
       final C lowerBound;
       @Nullable
       final C upperBound;
       transient SortedMap<C, V> wholeRow;
       
       TreeRow(final TreeBasedTable treeBasedTable, final R rowKey) {
           this(rowKey, null, null);
       }
       
       TreeRow(@Nullable final R rowKey, @Nullable final C lowerBound, final C upperBound) {
           (StandardTable<R, C, V>)TreeBasedTable.this.super(rowKey);
           this.lowerBound = lowerBound;
           this.upperBound = upperBound;
           Preconditions.checkArgument(lowerBound == null || upperBound == null || this.compare(lowerBound, upperBound) <= 0);
       }
       
       @Override
       public SortedSet<C> keySet() {
           return new Maps.SortedKeySet<C, Object>(this);
       }
       
       @Override
       public Comparator<? super C> comparator() {
           return TreeBasedTable.this.columnComparator();
       }
       
       int compare(final Object a, final Object b) {
           final Comparator<Object> cmp = (Comparator<Object>)this.comparator();
           return cmp.compare(a, b);
       }
       
       boolean rangeContains(@Nullable final Object o) {
           return o != null && (this.lowerBound == null || this.compare(this.lowerBound, o) <= 0) && (this.upperBound == null || this.compare(this.upperBound, o) > 0);
       }
       
       @Override
       public SortedMap<C, V> subMap(final C fromKey, final C toKey) {
           Preconditions.checkArgument(this.rangeContains(Preconditions.checkNotNull(fromKey)) && this.rangeContains(Preconditions.checkNotNull(toKey)));
           return new TreeRow((R)this.rowKey, fromKey, toKey);
       }
       
       @Override
       public SortedMap<C, V> headMap(final C toKey) {
           Preconditions.checkArgument(this.rangeContains(Preconditions.checkNotNull(toKey)));
           return new TreeRow((R)this.rowKey, this.lowerBound, toKey);
       }
       
       @Override
       public SortedMap<C, V> tailMap(final C fromKey) {
           Preconditions.checkArgument(this.rangeContains(Preconditions.checkNotNull(fromKey)));
           return new TreeRow((R)this.rowKey, fromKey, this.upperBound);
       }
       
       @Override
       public C firstKey() {
           final SortedMap<C, V> backing = this.backingRowMap();
           if (backing == null) {
               throw new NoSuchElementException();
           }
           return this.backingRowMap().firstKey();
       }
       
       @Override
       public C lastKey() {
           final SortedMap<C, V> backing = this.backingRowMap();
           if (backing == null) {
               throw new NoSuchElementException();
           }
           return this.backingRowMap().lastKey();
       }
       
       SortedMap<C, V> wholeRow() {
           if (this.wholeRow == null || (this.wholeRow.isEmpty() && TreeBasedTable.this.backingMap.containsKey(this.rowKey))) {
               this.wholeRow = (SortedMap<C, V>)(SortedMap)TreeBasedTable.this.backingMap.get(this.rowKey);
           }
           return this.wholeRow;
       }
       
       @Override
       SortedMap<C, V> backingRowMap() {
           return (SortedMap<C, V>)(SortedMap)super.backingRowMap();
       }
       
       @Override
       SortedMap<C, V> computeBackingRowMap() {
           SortedMap<C, V> map = this.wholeRow();
           if (map != null) {
               if (this.lowerBound != null) {
                   map = map.tailMap(this.lowerBound);
               }
               if (this.upperBound != null) {
                   map = map.headMap(this.upperBound);
               }
               return map;
           }
           return null;
       }
       
       @Override
       void maintainEmptyInvariant() {
           if (this.wholeRow() != null && this.wholeRow.isEmpty()) {
               TreeBasedTable.this.backingMap.remove(this.rowKey);
               this.wholeRow = null;
               this.backingRowMap = null;
           }
       }
       
       @Override
       public boolean containsKey(final Object key) {
           return this.rangeContains(key) && super.containsKey(key);
       }
       
       @Override
       public V put(final C key, final V value) {
           Preconditions.checkArgument(this.rangeContains(Preconditions.checkNotNull(key)));
           return super.put(key, value);
       }
   }
}

3 years ago

Java in General