package control;

import javax.swing.JFrame;

public class DebugTest {

    public static void main(String[] args) {

        System.out.println("Hello World!");

        System.out.println();

        System.out.println(true);

        System.out.println(new JFrame(){

            @Override

            public String toString() {

                // TODO Auto-generated method stub

                //return super.toString();

                return "This is a jframe.";

            }

        });

        System.err.println("There is an error.");

    }

}

package control;

import javax.swing.JFrame;

public class DebugTest {

    public static void main(String[] args) {

        int [] ints = new int[];

        try {

            for (int i = ; i < ; i++) {

                ints[i] = i+;

                System.out.println(ints[i]);

            }

        } catch (Exception e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

            System.err.println("数组越界！");

        }

    }

}