By making sure that we do a null check everytime before using reference variables.
A NullPointerException is thrown when you attempt to access an object reference which is null. Example: String str = null; str.equals("x"); // <- NullPointerException To fix it, you must read the error message and find out what object is null. Determining how to ensure that this object is not set to null in the future must be made on a case-by-case basis.
It depends on what it is.
A NullPointerException is an exception thrown by the Java Virtual Machine when you try to access a variable as if it were an object when it is contains null. For example, the following code would throw a NullPointerException: String s; if (s.charAt(0) == 'c') // this line throws NullPointerException return "s[0] is 'c'";
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She was blind!
Racism
To succeed in dealing with (a problem or difficulty).
Amelia Earhart had to first overcome prejudice and the obvious problem of money
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