大佬们帮我看下这个题怎么做

package com.test;

import java.awt.BorderLayout;
import java.awt.Font;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

public class Test0301 {
    static final String menuInfo = "\n1、若M=1,输出I*J的结果。"+
            "\n2、若M=2,输出九九表中I*J这个乘法的表示（宽度为9个字符）。"+
            "\n3、若M=3,输出九九表中I*J所在行的左边各项。"+
            "\n4、若M=4,输出九九表中I*J所在列的下边各项。"+
            "\n5、若M=5,输出九九表的第J行，I列为右下角的子乘法表。\n"+
            "\n第1行输入1个正整数T（1<=T<=100），表示有T组测试数据。" +
            "\n每组测试数据输入占1行，为三个整数M（1<=M<=5）, I（1<=I<=9）, J（I<=J<=9）";
    static int type = 0;
    static boolean flag = false;
    public static void main(String[] args) {
        JFrame jframe = new JFrame();
        JScrollPane mainPan = new JScrollPane();
        jframe.add(mainPan, BorderLayout.CENTER);
        JTextField txtField = new JTextField();
        txtField.setFont(new Font("gbk", Font.BOLD, 22));
        jframe.add(txtField, BorderLayout.SOUTH);
        jframe.setSize(800, 600);
        jframe.setVisible(true);
        jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JTextArea txtArea = new JTextArea();
        mainPan.setViewportView(txtArea);
        StringBuilder sb = new StringBuilder("\n");
        for (int i = 1; i <= 100; i++) {
            sb.append("-");
        }
        sb.append("\n");
        for (int i = 1; i <= 9; i++) {
            for (int j=1; j <= i; j++) {
                sb.append(j + "*" + i + "=" + i * j);
                sb.append("\t");
            }
            sb.append("\n");
        }
        txtArea.append(sb.toString());
        txtArea.append(menuInfo);
        txtField.addKeyListener(new KeyAdapter() {
            @Override
            public void keyPressed(KeyEvent e) {
                if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                    String str = txtField.getText();
                    txtField.setText("");
                    txtArea.append("\n"+str);
                    if (type == 0) {
                        type = Integer.valueOf(str);
                    } else if(type > 0){
                        handle(str.split(" "), txtArea);
                        type--;
                    }
                    if(type == 0) {
                        txtArea.append(sb.toString());
                        txtArea.append(menuInfo);
                    } else {
                        txtArea.append("\n剩余输入测试数据次数:"+type);
                    }
                }
            }
        });
    }
     static void handle(String[] choice, JTextArea txtArea) {
         if (choice.length < 3) {
             txtArea.append("\n输入有误,请输入三个参数!");
             type++;
             return;
         }
         int ele0 = Integer.valueOf(choice[1]);
         int ele1 = Integer.valueOf(choice[2]);
         if("1".equals(choice[0])) {
             txtArea.append("\n" + ele0 * ele1);
         } else if("2".equals(choice[0])) {
             txtArea.append("\n" + ele0 + "*" + ele1 + "=" +ele0 * ele1);
         } else if("3".equals(choice[0])) {
             txtArea.append("\n");
             for (int i = 1; i < ele0; i++) {
                 txtArea.append(i + "*" + ele1 + "=" + i * ele1 + "\t");
             }
         } else if("4".equals(choice[0])) {
             txtArea.append("\n");
             for (int i = ele1 + 1; i <= 9; i++) {
                 txtArea.append(ele0 + "*" + i + "=" + ele0 * i + "\t");
             }
         } else if("5".equals(choice[0])) {
             for (int i = ele1 + 1; i <= 9; i++) {
                 txtArea.append("\n");
                 for (int j = ele0 + 1; j <= i; j++) {
                     txtArea.append(j + "*" + i + "=" + i * j + "\t");
                 }
             }
         }
     }
}

  JFrame jframe = new JFrame();
        JScrollPane mainPan = new JScrollPane();
        jframe.add(mainPan, BorderLayout.CENTER);
        JTextField txtField = new JTextField();
        txtField.setFont(new Font("gbk", Font.BOLD, 22));
        jframe.add(txtField, BorderLayout.SOUTH);
        jframe.setSize(800, 600);
        jframe.setVisible(true);
        jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JTextArea txtArea = new JTextArea();
        mainPan.setViewportView(txtArea);
        StringBuilder sb = new StringBuilder("\n");

import java.util.Scanner;

public class HelloWorld {

    public static void main(String[] args) {
//        // TODO Auto-generated method stub
        Scanner in= new Scanner(System.in);
        int s=0,T,M,I,J,K;
        T=in.nextInt();
        while(s<T)
        {
            M=in.nextInt();
            I=in.nextInt();
            J=in.nextInt();
            if(M==1)
                System.out.print((I*J));
            else if(M==2)
                System.out.print(I + "*" + J + "=" + (I*J));
            else if(M==3)
                for(K=1;K<I;K++)
                    System.out.print(K + "*" + J + "=" + (K*J) + "\t");
            else if(M==4)
                for(K=J+1;K<=9;K++)
                    System.out.print(I + "*" + K + "=" + (I*K) + "\t");
            else if(M==5)
            {
                I++;J++;
                for(;J<=9;J++) {
                    for(K=I;K<=J;K++)
                        System.out.print(K + "*" + J + "=" + (K*J) + "\t");
                        System.out.println();
                        
                }
            }
            s++;
        }
    }}