Question

How to stop a program in Java

Answer 1

class Main {
    public static void main(String[] args) {
        System.out.println("abc");
        
        throw new RuntimeException();
        
        // System.out.println("xyz"); // error: unreachable statement
    }
}


/*
run:

abc
ERROR!
Exception in thread "main" java.lang.RuntimeException
	at Main.main(Main.java:5)

*/

 

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Answer 2

class Main {
    public static void main(String[] args) {
        System.out.println("abc");
        
        System.exit(0); // Terminate the program with exit code 0 (normal termination)
        
        System.out.println("xyz"); 
    }
}


/*
run:

abc

*/

 

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Answer 3

class Main {
    public static void main(String[] args) {
        System.out.println("abc");
        
        return; // Terminate the program gracefully by returning from the main method
        
        // System.out.println("xyz"); // error: unreachable statement
    }
}


/*
run:

abc

*/

 

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Answer 4

class Main {
    public static void main(String[] args) {
        System.out.println("abc");
         
        Runtime.getRuntime().halt(0); // Force terminate the JVM
         
        System.out.println("xyz"); 
    }
}
 
 
/*
run:
 
abc
 
*/

 

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Answer 5

class Main {
    public static void main(String[] args) {
        System.out.println("abc");
         
        throw new Error();
         
        // System.out.println("xyz");  // error: unreachable statement
    }
}
 
 
/*
run:
 
ERROR!
abc
Exception in thread "main" java.lang.Error
	at Main.main(Main.java:5)
 
*/

 

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