Java finally blocks usees or limitations.

Java finally blocks usees or limitations. 

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• Java finally block is a block that is used to execute important codes such as closing connection, stream, etc.

• Java finally block is always executed whether an exception is handled or not.

• Java finally blocks follows try or catch block.

Rule: For each try block there can be zero or more catch blocks, but only one finally block. 

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Limitations:-

Note: The final block will not be executed if program exits(either by calling System.exit() or by causing a fatal error that causes the process to abort). 

check Code:

package interviewQuestion;

public class FinallyBlockUseAndLimitation {

public static void main(String[] args) {

System.out.println("Before Exit");

// program exits by calling System.exit()

System.exit(0);

try {

int data = 25 / 0;

System.out.println(data);

}

catch (NullPointerException e) {

System.out.println(e);

} 

finally {

System.out.println("finally block is always executed");

}

System.out.println("rest of the code...");

System.out.println("Without Exit");

}

}