java swing标准对话框具体实现

package test001;
import java.awt.event.actionevent;
import java.awt.event.actionlistener;
import javax.swing.jbutton;
import javax.swing.jframe;
import javax.swing.joptionpane;
import javax.swing.jtoolbar;
public class testjoptionpane implements actionlistener{
    private jframe jf = new jframe("标准对话框测试");
    /**
     * @param args
     */
    public static void main(string[] args) {
        // todo auto-generated method stub
        new testjoptionpane().createui();
    }
    public void createui(){
        jtoolbar jtb = new jtoolbar();
        string[] s = {"错误", "退出确认1", "退出确认2", "警告", "输入", "选择"};
        int size = s.length;
        jbutton[] button = new jbutton[size];
        for(int i = 0; i < size; i++){
            button[i] = new jbutton(s[i]);
            button[i].addactionlistener(this);
            jtb.add(button[i]);
        }
        jf.add(jtb, "north");
        jf.setsize(350, 150);
        jf.setlocation(400, 200);
        jf.setdefaultcloseoperation(jframe.exit_on_close);
        jf.setvisible(true);
    }
    @override
    public void actionperformed(actionevent e) {
        // todo auto-generated method stub
        string s = e.getactioncommand();
        if(s.equals("错误")){
            joptionpane.showmessagedialog(null, "要显示的错误信息---",
                    "错误提示",joptionpane.error_message);
        }
        else if(s.equals("退出确认1")){
            int result = joptionpane.showconfirmdialog(null,
                    "推出前是否保存程序？");
            if(result == joptionpane.yes_option){
                system.out.println("保存程序---");
                system.exit(0);
            }
            else if(result == joptionpane.no_option){
                system.exit(0);
            }
        }
        else if(s.equals("退出确认2")){
            int result = joptionpane.showconfirmdialog(null, "退出前是否保存程序？");
            if(result == joptionpane.yes_option){
                system.out.println("保存程序---");
                system.exit(0);
            }
            else if(result == joptionpane.no_option){
                system.exit(0);
            }
        }
        else if(s.equals("警告")){
            object[] options = {"继续", "撤销"};
            int result = joptionpane.showoptiondialog(null,
                    "本操作可能导致数据丢失","warning", joptionpane.default_option,
                    joptionpane.warning_message, null, options, options[0]);
            if(result == 0){
                system.out.println("继续操作---");
            }
        }
        else if(s.equals("输入")){
            string name = joptionpane.showinputdialog("请输入您的姓名：");
            if(name != null){
                system.out.println("姓名：" + name);
            }
        }
        else if(s.equals("选择")){
            object[] possiblevalues = {"体育", "政治", "经济", "文化"};
            object selectedvalue = joptionpane.showinputdialog(null,
                    "choose one","input", joptionpane.information_message, null,
                    possiblevalues, possiblevalues[0]);
            string choose = (string)selectedvalue;
            if(choose != null){
                system.out.println("你选择的是："+ choose);
            }
        }
    }
}