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A NullPointerException in Java occurs when you try to access or manipulate an object reference that has not been initialized multiple scenarios: 1) int[] arr = null; int element = arr[0]; 2)MyClass obj; obj.doSomething(); 3)Integer num = null; int value = num; 4)MyClass obj = null; int result = obj.someMethod(); NullPointerException in Java ...
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