java多窗口点击相关按钮实现计算功能，actionPerformed部分代码没有反应

打开后窗口是这样

点击最大公约数后，新打开一个窗口如图

**输入第一个和第二个整数，希望点击计算按钮后答案出现在文本框中，但是没有出现，急需找出错误！
**

我有三个类，分别是Police（实现接口implements ActionListener）、Test（包含main方法）和MyWin（创建窗口）

代码如下，希望大家帮我看看哪里出了问题**(Police类中actionPerformed方法出错概率较大)**：
1.Test类（.java文件）

import java.awt.*;
import javax.swing.*;
public class Test{
    public static void main(String[] args){
        MyWin mywin=new MyWin("计算页面");
        
    }
}

2.Police类（.java文件）

import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
public class Police implements ActionListener{      //构造创建监视器对象的类，java要求该种类实现相关接口ActionListener
    private JTextField txt,txt2;
    private JButton btn,btn1,btn2,btn3,btn4,btn5;
    private JTextArea txta;
    int m,n;
    String s,s1="chushi",s2;
    public Police(JTextField a,JTextField b,JTextArea n,JButton c,JButton d,JButton e,JButton f,JButton g,JButton h){
        txt=a;
        txt2=b;
        txta=n;
        btn=c;
        btn1=d;
        btn2=e;
        btn3=f;
        btn4=g;
        btn5=h;
    }
    public Police(JTextArea a,JButton c,JButton d,JButton e,JButton f,JButton g,JButton h){
        txta=a;
        btn=c;
        btn1=d;
        btn2=e;
        btn3=f;
        btn4=g;
        btn5=h;
    }
    public Police(JButton d,JButton e,JButton f,JButton g,JButton h){
        btn1=d;
        btn2=e;
        btn3=f;
        btn4=g;
        btn5=h;
    }
    public void actionPerformed(ActionEvent e){          //发生事件后的事件处理函数，接口内的抽象方法，需要被重写。
        s=e.getActionCommand();                         /*通过System.out.println(e.getSource().toString());
                                                            可以以字符串形式输出发生Actionevent事件的事件源对象的引用（此处.toString()不能少）*/
        if(e.getSource()!=btn){
            s1=s;
            new MyWin(s1);
        }
        else{
            if(e.getSource()==btn1){
            System.out.println(s1);
            m=Integer.parseInt(txt.getText());
            n=Integer.parseInt(txt2.getText());
            s2=m+n+"";
            txta.setText(s2);
        }
        else if(e.getSource()==btn2){
            m=Integer.parseInt(txt.getText());
            n=Integer.parseInt(txt2.getText());
            s2=m+n+"";
            txta.setText(s2);
            
        }
        else if(e.getSource()==btn3){
            txta.setText("153,370,371,407");
        }
        else if(e.getSource()==btn4){
                txta.setText("6,28,496");
        }
        else if(e.getSource()==btn5){
            txta.setText("{101,103},{107,109},{137,139},{149,151},{179,181},{191,193},{197,199}{227,229},{239,241},{269,271},{281,283},{311,313},{347,349},{419,421},{431,433}{461,463},{521,523},{569,571},{599,601},{617,619},{641,643},{659,661},{809,811},{821,823},{827,829},{857,859},{881,883}"); 
        }
        }
    }
}

3.MyWin类（.java文件）

import java.awt.*;
import javax.swing.*;
public class MyWin extends JFrame{
    private JTextField txt,txt2;
    private JLabel label,label2,label3;
    private JButton btn,btn1,btn2,btn3,btn4,btn5;
    private JTextArea txta;
    private Police police;
    JPanel jp;
    String s;
    public MyWin(String s){
        this.s=s;
        label=new JLabel("第一个整数");
        label2=new JLabel("第二个整数");
        label3=new JLabel("计算结果");
        txt=new JTextField();
        txt2=new JTextField();
        txta=new JTextArea();
        btn=new JButton("计算");
        btn1=new JButton("求最大公约数");
        btn2=new JButton("求最小公倍数");
        btn3=new JButton("求水仙花数");
        btn4=new JButton("求1000以内完数");
        btn5=new JButton("求所有三位孪生素数");
        jp=new JPanel();
        txt.setPreferredSize( new Dimension(300,30));
        txt2.setPreferredSize( new Dimension(300,30));
        btn.setPreferredSize( new Dimension(300,30));
        txta.setPreferredSize( new Dimension(290,60));
        label3.setPreferredSize( new Dimension(70,30));
        jp.setPreferredSize( new Dimension(400,90));
        setLayout(new FlowLayout());
        if((s=="最大公约数")||(s=="最小公倍数")){
            init1();
        }
        else if(s=="计算页面"){
            init2();
        }else{
            init();
        }
        setVisible(true);
        setDefaultCloseOperation(DISPOSE_ON_CLOSE);
    }
    public void init(){
        this.setBounds(500,300,400,320);
        this.setTitle(s);
        add(label3);
        add(txta);
        add(btn);
        jp.add(btn1);
        jp.add(btn2);
        jp.add(btn3);
        jp.add(btn4);
        jp.add(btn5);
        add(jp);
        btn.setActionCommand("计算");
        btn1.setActionCommand("最大公约数");
        btn2.setActionCommand("最小公倍数");
        btn3.setActionCommand("水仙花数");
        btn4.setActionCommand("完数");
        btn5.setActionCommand("三位孪生素数");
        police=new Police(txta,btn,btn1,btn2,btn3,btn4,btn5);
        btn.addActionListener(police);
        btn1.addActionListener(police);
        btn2.addActionListener(police);
        btn3.addActionListener(police);
        btn4.addActionListener(police);
        btn5.addActionListener(police);
    }
    public void init1(){
        this.setBounds(500,300,400,320);
        this.setTitle(s);
        add(label);
        add(txt);
        add(label2);
        add(txt2);
        add(label3);
        add(txta);
        add(btn);
        jp.add(btn1);
        jp.add(btn2);
        jp.add(btn3);
        jp.add(btn4);
        jp.add(btn5);
        add(jp);
        txt.setActionCommand("数1");
        txt2.setActionCommand("数2");
        btn.setActionCommand("计算");
        btn1.setActionCommand("最大公约数");
        btn2.setActionCommand("最小公倍数");
        btn3.setActionCommand("水仙花数");
        btn4.setActionCommand("完数");
        btn5.setActionCommand("三位孪生素数");
        police=new Police(txt,txt2,txta,btn,btn1,btn2,btn3,btn4,btn5);
        txt.addActionListener(police);
        txt2.addActionListener(police);
        btn.addActionListener(police);
        btn1.addActionListener(police);
        btn2.addActionListener(police);
        btn3.addActionListener(police);
        btn4.addActionListener(police);
        btn5.addActionListener(police);
    }
    public void init2(){
        this.setBounds(500,300,400,320);
        this.setTitle(s);
        jp.add(btn1);
        jp.add(btn2);
        jp.add(btn3);
        jp.add(btn4);
        jp.add(btn5);
        add(jp);
        btn1.setActionCommand("最大公约数");
        btn2.setActionCommand("最小公倍数");
        btn3.setActionCommand("水仙花数");
        btn4.setActionCommand("完数");
        btn5.setActionCommand("三位孪生素数");
        police=new Police(btn1,btn2,btn3,btn4,btn5);
        btn1.addActionListener(police);
        btn2.addActionListener(police);
        btn3.addActionListener(police);
        btn4.addActionListener(police);
        btn5.addActionListener(police);
    }
}

s=="最大公约数"这样的语句改成s.equals("最大公约数")
其次，没必要每次都new一个MyWins(s1)，除非你每次new之前把原来的frame关闭，否则画面越new越多，没必要。你可以一开始把需要用到的win都new好，放到数组里，根据按下不同的按钮显示对应数组的win就可以了

actionPerformced(){
    Help();
}

public void Help()  {
    try{

    } catch(***ecxtption e){
    }

}

【JAVA Swing界面编写中actionPerformed本身是不带异常的，所以也不能抛出异常，这个时候需要主动设计抛出异常的方式】
可以尝试下，这个博主的解题思路，看看是否有效，详情参考链接：https://blog.csdn.net/WilsonSong1024/article/details/79870627?ops_request_misc=&request_id=&biz_id=102&utm_term=actionPerformed%EF%BC%88%EF%BC%89&utm_medium=distribute.pc_search_result.none-task-blog-2~blog~sobaiduweb~default-1-79870627.nonecase&spm=1018.2226.3001.4450

你的if漏判断了，我给你补全

import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
public class Police implements ActionListener{      //构造创建监视器对象的类，java要求该种类实现相关接口ActionListener
    private JTextField txt,txt2;
    private JButton btn,btn1,btn2,btn3,btn4,btn5;
    private JTextArea txta;
    int m,n;
    String s,s1="chushi",s2;
    public Police(JTextField a,JTextField b,JTextArea n,JButton c,JButton d,JButton e,JButton f,JButton g,JButton h){
        txt=a;
        txt2=b;
        txta=n;
        btn=c;
        btn1=d;
        btn2=e;
        btn3=f;
        btn4=g;
        btn5=h;
    }
    public Police(JTextArea a,JButton c,JButton d,JButton e,JButton f,JButton g,JButton h){
        txta=a;
        btn=c;
        btn1=d;
        btn2=e;
        btn3=f;
        btn4=g;
        btn5=h;
    }
    public Police(JButton d,JButton e,JButton f,JButton g,JButton h){
        btn1=d;
        btn2=e;
        btn3=f;
        btn4=g;
        btn5=h;
    }
    public void actionPerformed(ActionEvent e){          //发生事件后的事件处理函数，接口内的抽象方法，需要被重写。
        s=e.getActionCommand();                         /*通过System.out.println(e.getSource().toString());
                                                            可以以字符串形式输出发生Actionevent事件的事件源对象的引用（此处.toString()不能少）*/
        if(e.getSource()!=btn){
            s1=s;
            new MyWin(s1);
        }
        else{
            if (e.getSource() == btn) {
                m = Integer.parseInt(txt.getText());
                n = Integer.parseInt(txt2.getText());
                s2 = "公约数为" + m + n;
                txta.setText(s2);
            }
            if(e.getSource()==btn1){
                System.out.println(s1);
                m=Integer.parseInt(txt.getText());
                n=Integer.parseInt(txt2.getText());
                s2=m+n+"";
                txta.setText(s2);
            }
            else if(e.getSource()==btn2){
                m=Integer.parseInt(txt.getText());
                n=Integer.parseInt(txt2.getText());
                s2=m+n+"";
                txta.setText(s2);

            }
            else if(e.getSource()==btn3){
                txta.setText("153,370,371,407");
            }
            else if(e.getSource()==btn4){
                txta.setText("6,28,496");
            }
            else if(e.getSource()==btn5){
                txta.setText("{101,103},{107,109},{137,139},{149,151},{179,181},{191,193},{197,199}{227,229},{239,241},{269,271},{281,283},{311,313},{347,349},{419,421},{431,433}{461,463},{521,523},{569,571},{599,601},{617,619},{641,643},{659,661},{809,811},{821,823},{827,829},{857,859},{881,883}");
            }
        }
    }
}