query: NullPointerException when declaring semaphores in Java?
positive_passages.docid: 49
positive_passages.text: What is a NullPointerException, and how do I fix it?
negative_passages.docid: 98866
negative_passages.text: Null Pointer Exception on getGraphics()
negative_passages.docid: 114816
negative_passages.text: Is null reference possible?
negative_passages.docid: 33103
negative_passages.text: How come invoking a (static) method on a null reference doesn't throw NullPointerException?
negative_passages.docid: 480
negative_passages.text: What causes a java.lang.ArrayIndexOutOfBoundsException and how do I prevent it?
negative_passages.docid: 137545
negative_passages.text: "'void' type not allowed here" error (Java)
negative_passages.docid: 119573
negative_passages.text: NullPointerException in Java with no StackTrace
negative_passages.docid: 96453
negative_passages.text: Caught Throwable or Exception is null
negative_passages.docid: 2116
negative_passages.text: IllegalArgumentException or NullPointerException for a null parameter?
negative_passages.docid: 17877
negative_passages.text: Why are local variables not initialized in Java?
negative_passages.docid: 57412
negative_passages.text: Is there a way to make Runnable's run() throw an exception?
negative_passages.docid: 8585
negative_passages.text: Is semaphore an IPC mechanism?
negative_passages.docid: 64332
negative_passages.text: avoiding null reference exceptions
negative_passages.docid: 55830
negative_passages.text: What's the rationale for null terminated strings?
negative_passages.docid: 10867
negative_passages.text: How to avoid ArrayIndexOutOfBoundsException or IndexOutOfBoundsException?
negative_passages.docid: 35129
negative_passages.text: Why does String.valueOf(null) throw a NullPointerException?
negative_passages.docid: 81518
negative_passages.text: Find out what variable is throwing a NullPointerException programmatically