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It is not necessary that each try block must be followed by a catch block. It should be followed by either a catch block OR a finally block. And whatever exceptions are likely to be thrown should be declared in the throws clause of the method.t is not necessary that each try block must be followed by a catch block. It should be followed by either a catch block OR a finally block. And whatever exceptions are likely to be thrown should be declared in the throws clause of the method.
So, it is important for Java beginners to take a basic course such as Java Fundamentals to avoid wasting time on such petty errors. Moreover, Java Null Pointer Exception is a Run time error. Instead, Null Pointer Exception occurrences in the code should actually be reported during the code compilation. There are few good languages out there in the market which report Null Pointer Exception at compile time to avoid such embarrassments at runtime.