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NullPointerException

空指针异常(NUllPointerException)：任何引用类型都可能取值为null，此时变量语法上已算是赋过值了，但是并不指向任何对象…

注意：访问没有初始化的数组中的值，是会抛出异常的（NULLpointerException）,java中只保证一位数组的地址是连续的，二 …

例如：空指向异常（NullPointerException），这种异常一般都不会人为处理，但执行过程中可以会出现。非运行时异常也称为 …

类 JEditorPane - 宇智波鼬的日志 - 网易博客 ...

更多>> NullPointerException- 如果 listener- 侦听器 ...

JAVA英文单词-李兴华_百度文库 ... ArithmeticException: 算术异常 NullPointerException: 空引用异常 overload: 重载 ...

a.equals("string");是会抛出空指针（NullPointerException）的错误。这时：if (a==null)会返回true.所以：[code]if (a!=null){ if(a.e…

These wsdl-return-value-mapping elements should be removed (otherwise NullPointerException is thrown during the deployment ).

Constructs a NullPointerException with no detail message .

As expected , the test failed with the following error message : java. lang. NullPointerException.

NullPointerException - if the given array is null .

In Java , calling any method on null will cause a NullPointerException.

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