简单代码gui确认对话框_20160909

待我称王封你为后i 2022-09-25 12:25 175阅读 0赞

package Chapter03;
    import java.text.SimpleDateFormat;
    import java.util.*;
    
    import javax.swing.JOptionPane;
    
    public class chapter03_example01 {
    
        public static void main(String[] args) {
            //booleantypetest();
            //dateshijianxianshi();
            //lianggeshuxiangjia();
            //randomexercise();
            //switchyuju();
            confirmed();
        }
    
        public static void booleantypetest() {
            boolean right = true, wrong = false;
            char c1 = 'a', c2 = 'A';
            if (c1 > c2) {
                System.out.println("a > A is " + right);
                System.out.println(c1 + "\t" + (int) c1);
                System.out.println(c2 + "\t" + (int) c2);
            } else
                System.out.println("a > A is " + wrong);
            System.out.println(2 < 0);// 输出boolean类型结果
    
            int xx = 101;
            boolean even1 = true;
            if (xx % 2 == 0)
                even1 = true;
            else
                even1 = false;
            System.out.println("even1 = " + even1);
            // 可以代替上面的if语句判断，将判断结果直接赋值到boolean类型的变量中。
            boolean even2 = xx % 2 == 0;
            System.out.println("even2 = " + even2);
        }
    
        public static void dateshijianxianshi(){
            /*
             * System.currentTimeMillis()产生一个当前的毫秒，这个毫秒其实就是自1970年1月1日0时起的毫秒数
             * Date();
             * */
            Date nowtime = new Date(System.currentTimeMillis());
            SimpleDateFormat dateformat = new SimpleDateFormat("z:y-MM-dd kk:mm:ss");
            String datenow = dateformat.format(nowtime);
            System.out.println(datenow);
        }
    
        public static void lianggeshuxiangjia() {
            System.out.println(System.currentTimeMillis());
            int number1 = (int) (System.currentTimeMillis() % 10);
            int number2 = (int) (System.currentTimeMillis() * 7 % 10);
            String output = number1 + " + " + number2 + " = ?";
            String answerString = JOptionPane.showInputDialog(null, output, "两个数的和", JOptionPane.QUESTION_MESSAGE);
            int answer = Integer.parseInt(answerString);
            String output2 = number1 + " + " + number2 + " = " + (number1 + number2);
            String output3 = number1 + " + " + number2 + " != " + answer;
            if ((number1 + number2) == answer) {
                JOptionPane.showMessageDialog(null, "回答正确!\n" + output2, "结果判断", JOptionPane.INFORMATION_MESSAGE);
            } else {
                JOptionPane.showMessageDialog(null, "回答错误！\n" + output3 + "\n正确答案是\n" + output2, "结果判断",
                        JOptionPane.INFORMATION_MESSAGE);
            }
        }
    
        public static void randomexercise(){
            double xx = Math.random();
            System.out.println(xx);
            int number1 = (int)(Math.random()*100%10);
            int number2 = (int)(Math.random()*100%10);
            String output1 = number1 + " + " +number2;
            String answerString = JOptionPane.showInputDialog(null,output1 + " = ?","问题",JOptionPane.QUESTION_MESSAGE);
            int answer1 = Integer.parseInt(answerString);
            int answer2 = number1 + number2;
    
            if(answer1 == answer2){
                JOptionPane.showMessageDialog(null, output1+" = " + answer2, "正确", JOptionPane.INFORMATION_MESSAGE);
            }else{
                JOptionPane.showMessageDialog(null, output1 + " != " + answer1, "错误", JOptionPane.INFORMATION_MESSAGE);
            }
        }
    
        public static void switchyuju(){
            int number1 = 90;
            switch(number1)
            {
            case 10: System.out.println("case 10");
            break;
            case 100: System.out.println("case 100");
            break;
            default: System.out.println("no case");
            System.exit(0);
            }
        }
    
        //(GUI)确认对话框
        public static void confirmed(){
            int confirm = JOptionPane.showConfirmDialog(null, "confirmed?", "标题", JOptionPane.INFORMATION_MESSAGE);
            System.out.println(confirm);
            System.out.println(JOptionPane.YES_OPTION);
        }
    }