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Can not connect to Oracle DB from Netbeans 7  RSS feed

 
Ahmed hosni
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Ahmed hosni
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run:
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver
at java.net.URLClassLoader$1.run(URLClassLoader.java:220)
at java.net.URLClassLoader$1.run(URLClassLoader.java:209)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:208)
at java.lang.ClassLoader.loadClass(ClassLoader.java:325)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:270)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:338)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:186)
at DisplayAuthors.main(DisplayAuthors.java:17)
java.lang.NullPointerException
at DisplayAuthors.main(DisplayAuthors.java:44)
BUILD SUCCESSFUL (total time: 0 seconds)
 
Ahmed hosni
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please help
 
Mike Zal
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Fedora Java Oracle
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Ahmed hosni wrote:run:
java.lang.ClassNotFoundException: oracle.jdbc.driver.OracleDriver


The oracle jdbc driver is not added to the classpath.
 
Ahmed hosni
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How i can insure that ?
 
Ahmed hosni
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i have another problem



Error: Could not find the main class Start.
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" Java Result: 1
 
Mike Zal
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Fedora Java Oracle
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Ahmed hosni wrote:How i can insure that ?


In the Projects window, right click on your project and select Properties. In the Properties box, select Libraries. Click on the Add JAR/Folder button to and point to the jdbc jar file.

Ahmed hosni wrote:
Error: Could not find the main class Start.
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" Java Result: 1


I cannot see your project layout so I can't answer that. I'm guessing that you intend to run the public void main(String[] args) function from a class called Start. Make sure that file exists in your project.
 
Ahmed hosni
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run:
java.lang.NullPointerException
at DisplayAuthors.main(DisplayAuthors.java:44)
Exception in thread "main" java.lang.NoSuchMethodError: oracle.i18n.text.converter.CharacterConverterOGS.getInstance(I)Loracle/i18n/text/converter/CharacterConverter;
at oracle.sql.converter.CharacterConverterFactoryOGS.make(CharacterConverterFactoryOGS.java:43)
at oracle.sql.CharacterSetWithConverter.getInstance(CharacterSetWithConverter.java:95)
at oracle.sql.CharacterSetFactoryThin.make(CharacterSetFactoryThin.java:126)
at oracle.sql.CharacterSet.make(CharacterSet.java:448)
at oracle.jdbc.driver.DBConversion.init(DBConversion.java:150)
at oracle.jdbc.driver.DBConversion.<init>(DBConversion.java:111)
at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:1007)
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:292)
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:508)
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:203)
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:33)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:510)
at java.sql.DriverManager.getConnection(DriverManager.java:620)
at java.sql.DriverManager.getConnection(DriverManager.java:222)
at DisplayAuthors.main(DisplayAuthors.java:18)
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)

 
Jan Cumps
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Check the instructions that come with the jdbc driver. There are extra jars to add to the classpath.
 
It is sorta covered in the JavaRanch Style Guide.
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