exceptionexample.java

来自「java的书上例子」· Java 代码 · 共 27 行

class MyException extends Exception {
	private int exceptnumber;
	MyException ( int a ) {
		exceptnumber = a;
	}
	public String toString () {
		return "MyException[" + exceptnumber + "]";
	}
}

class ExceptionExample {
	static void makeexcept(int a) throws MyException {
		System.out.println("called makeexcept(" + a + ").");
		if ( a == 0 )
			throw new MyException(a);
		System.out.println("exit without exception");
	}
	public static void main ( String args[] ) {
		try {
			makeexcept(5);
			makeexcept(0);
		} catch ( MyException e ) {
			System.out.println("caught " + e );
		}
	}
}