java.lang.NullPointerException

Programming Questions

ignas.lun..

java.lang.NullPointerException

in Programming Questions • 11 months ago

Hi, I'm new in processing and beginer in programing. Could anyone help me to resolve an error called javaNullpointer Exception? I'm just typed ellipse (50, 50, 80, 80);

and i get this:

java.lang.NullPointerException

at processing.app.Library.getClassPath(Library.java:296)

at processing.app.Library.<init>(Library.java:194)

at processing.mode.java.JavaMode.getCoreLibrary(JavaMode.java:149)

at processing.mode.java.JavaBuild.preprocess(JavaBuild.java:401)

at processing.mode.java.JavaBuild.preprocess(JavaBuild.java:185)

at processing.mode.java.JavaBuild.build(JavaBuild.java:144)

at processing.mode.java.JavaBuild.build(JavaBuild.java:123)

at processing.mode.java.JavaMode.handleRun(JavaMode.java:160)

at processing.mode.java.JavaEditor$19.run(JavaEditor.java:474)

at java.lang.Thread.run(Thread.java:637)

What's wrong with my line?

Replies(4)

PhiLho

Re: java.lang.NullPointerException

11 months ago

Strange.
For details on NullPointerException, see the Technical FAQ. (A generic article on exceptions, one specific to NPE.)
Why do you get this exception? No idea... Are you able to run a simple sketch among the Processing examples?

ignas.lun..

Re: java.lang.NullPointerException

11 months ago

Yes, I rode that. When I'm trying to run a sketch from examples I'm getting this message:

[0] "java_home: unrecognized option `--exec'"

[1] "java_home: unrecognized option `-runjdwp:transport=dt_socket,address=127.0.0.1:8833,suspend=y'"

[2] "java_home: unrecognized option `-Djava.library.path=:/Applications/Processing.app/Contents/Resources/Java:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources:.:/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java'"

[3] "java_home: unrecognized option `-cp'"

[4] "java_home: unrecognized option `-ea'"

[5] "java_home: unrecognized option `--editor-location=390,100'"

[6] "java_home: unrecognized option `--external'"

[7] "java_home: unrecognized option `--display=0'"

[8] "java_home: unrecognized option `--sketch-path=/var/folders/BJ/BJdlkbL1GZCfRVrrMop6sE+++TI/-Tmp-/untitled4414128839184028652sketches/sketch_121109a'"

Using startup command:

{command=command=/usr/libexec/java_home --version 1.6 -d32 --exec java -Xrunjdwp:transport=dt_socket,address=127.0.0.1:8833,suspend=y -Xdock:name=sketch_121109a -Djava.library.path=:/Applications/Processing.app/Contents/Resources/Java:/System/Library/PrivateFrameworks/JavaApplicationLauncher.framework/Resources:.:/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java -cp /var/folders/BJ/BJdlkbL1GZCfRVrrMop6sE+++TI/-Tmp-/sketch_121109a5154111526999096786temp:/Applications/Processing.app/Contents/Resources/Java/core/library/core.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/gluegen-rt-natives-linux-amd64.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/gluegen-rt-natives-linux-i586.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/gluegen-rt-natives-macosx-universal.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/gluegen-rt-natives-windows-amd64.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/gluegen-rt-natives-windows-i586.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/gluegen-rt.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/jogl-all-natives-linux-amd64.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/jogl-all-natives-linux-i586.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/jogl-all-natives-macosx-universal.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/jogl-all-natives-windows-amd64.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/jogl-all-natives-windows-i586.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/jogl-all.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/core.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/gluegen-rt-natives-linux-amd64.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/gluegen-rt-natives-linux-i586.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/gluegen-rt-natives-macosx-universal.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/gluegen-rt-natives-windows-amd64.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/gluegen-rt-natives-windows-i586.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/gluegen-rt.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/jogl-all-natives-linux-amd64.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/jogl-all-natives-linux-i586.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/jogl-all-natives-macosx-universal.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/jogl-all-natives-windows-amd64.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/jogl-all-natives-windows-i586.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/jogl-all.jar:/Applications/Processing.app/Contents/Resources/Java/lib/pde.jar:/Applications/Processing.app/Contents/Resources/Java/core/library/core.jar:/Applications/Processing.app/Contents/Resources/Java/lib/ant.jar:/Applications/Processing.app/Contents/Resources/Java/lib/ant-launcher.jar:/Applications/Processing.app/Contents/Resources/Java/lib/antlr.jar:/Applications/Processing.app/Contents/Resources/Java/lib/jna.jar:/Applications/Processing.app/Contents/Resources/Java/quaqua.jar -ea processing.core.PApplet "--editor-location=390,100" --external --display=0 --sketch-path=/var/folders/BJ/BJdlkbL1GZCfRVrrMop6sE+++TI/-Tmp-/untitled4414128839184028652sketches/sketch_121109a sketch_121109a , quote=quote=", address=address=127.0.0.1:8833}

PhiLho

Re: java.lang.NullPointerException

11 months ago

Wow...
You are on a Mac, right?
What version of Java are you using? Processing works best with the Oracle version, the OpenJDK has problems, and, well, Apple dropped the support of its proprietary version of Java, no?

Hint: on the command line, type:
java -version

ignas.lun..

Re: java.lang.NullPointerException

11 months ago

yea, mac. OK now just trying to update my Java.

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