Logging output of a batch file to log file in Java.

[Ranjeet Deshmukh]

Hi All,

I'm using batch file in java to accomplish certain task. Currently I'm getting output of this batch file inside Eclipse console. I want to create a log file under the same project and overwrite these logs each time.

Please find my code below:

Runtime runtime = Runtime.getRuntime();
try {
Process p1 = runtime.exec("Deploy.bat");
java.io.InputStream is = (java.io.InputStream) p1.getInputStream();
int i = 0;
while( (i = is.read() ) != -1) {
System.out.print((char)i);
}
} catch(IOException e) {
e.printStackTrace();
} catch(Exception e){
e.printStackTrace();
}

[Jesper de Jong]

Instead of using System.out.print(...), which prints to the console, you can open a file and write to the file (using for example a FileOutputStream).

Can you explain in more detail what you want to know?

Oracle has a good set of tutorials about I/O, where you can learn how to write data to a file.

Even better would be to use a logging framework such as Logback or Log4J for logging.

[Ranjeet Deshmukh]

 

Jesper de Jong wrote:Instead of using System.out.print(...), which prints to the console, you can open a file and write to the file (using for example a FileOutputStream).

Can you explain in more detail what you want to know?

Oracle has a good set of tutorials about I/O, where you can learn how to write data to a file.

Even better would be to use a logging framework such as Logback or Log4J for logging.

Hi Jesper de Jong,

Thanks for the quick help.. it worked fine with FileOutputStream.

Runtime runtime = Runtime.getRuntime();
try {
System.out.println("\n\tStarted DAA Generation and Deployment....\n");
Process p1 = runtime.exec("ImportAndDeployProj.bat");
java.io.InputStream is = (java.io.InputStream) p1.getInputStream();
File logfile = new File("C:\\Automation\\Logs\\Logfile.log");
@SuppressWarnings("resource")
FileOutputStream fop = new FileOutputStream(logfile);
int i = 0;
while( (i = is.read() ) != -1) {
fop.write((char)i);
}
System.out.println("\n\tCheers!!!! DAA(s) Generated and Deployed Successfully...\n");
} catch(IOException e) {
System.out.println(e.getMessage() );
} catch(Exception e){
System.out.println(e.getMessage() );
}