Java Basics-Exception-runtimeexception

Class RuntimeException

• Java.lang.Object
• Java.lang.Throwable
• Java.lang.Exception
• Java.lang.RuntimeException
• ArithmeticException
• Indexoutofboundsexception
• ......

 Public classExceptiontest { Public Static voidMain (string[] args) {Divdemo dd=NewDivdemo (); intResultd; Resultd= Dd.div (10, 0); System.out.println ("Resultd ' value is:" +Resultd); System.out.println ("Over!"); }}/**-----------------Class arithmeticexception * java.lang.Object * java.lang.Throwable * java.lang.Excepti On * java.lang.RuntimeException * java.lang.ArithmeticException **/ classdivdemo{/**runtimeexception features * runtimeexception <--ArithmeticException * Method internal to JVM throwing <RuntimeException> exceptions *     Method name can not add throws Xxxexception, you can not declare this function to throw an exception, do not let the caller handle, is to let the program stop.     * * The programmer who calls the method cannot handle the exception, only changes to the program to conform to the legitimacy of the incoming parameter. * */     Public intDivintAintb) {        if(b = = 0 ){            Throw NewArithmeticException ("----by zero!"); }        returnA/C; }}

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Java Basics-Exception-runtimeexception