Question

一段编好的JAVA程序，有许多错误 帮忙看看。谢谢了

+
-
数字一____ ×_____数字二 =_______
/

加减乘除是按钮 数字一和数字二是标签

就是这样的题 不过编出来的东西 总有错误帮忙看看 谢谢
今天晚上就要了 请快点 如果过了时间 答案也就没用了，分我也会作废的谢谢
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class jiemian extends Applet implements ActionListener
{
Label Nname1=new Lable("数1");
Label Nname2=new Lable("数2");
TextField tnama1=new TextField();
TextField tnama2=new TextField();
TextField tnama3=new TextField();
Button btn1=new Button("+");
Button btn2=new Button("-");
Button btn3=new Button("*");
Button btn4=new Button("/");
Button btn5=new Button("=");
public void init(){
this.setLayout(null);
Nname1.setBounds(10,30,100,40);
Nname1.setFont(new Font("",Font.BOLD,40));
Nname1.setForeground(color.cyan);
Nname1.setBounds(10,30,80,40);
Nname1.setFont(new Font("",Font.BOLD,40));
add(Nname1);
Nname2.setBounds(370,30,100,40);
Nname2.setFont(new Font("",Font.BOLD,40));
Nname2.setForeground(color.cyan);
Nname2.setBounds(10,30,80,40);
Nname2.setFont(new Font("",Font.BOLD,40));
add(Nname2);
tname1.setBounds(120,30,200,40);
tname1.setFont(new Font("",Font.BOLD,40));
tname2.setBounds(480,30,200,40);
tname2.setFont(new Font("",Font.BOLD,40));
tname3.setBounds(730,30,200,40);
tname3.setFont(new Font("",Font.BOLD,40));
add(tname1);
add(tname2);
add(tname3);
btn1.setBounds(330,0,30,30);
btn1.setFont(new Font("",Font.BOLD,20));
btn2.setBounds(330,40,30,30);
btn2.setFont(new Font("",Font.BOLD,20));
btn3.setBounds(330,80,30,30);
btn3.setFont(new Font("",Font.BOLD,20));
btn4.setBounds(330,120,30,30);
btn4.setFont(new Font("",Font.BOLD,20));
btn5.setBounds(690,30,30,30);
btn5.setFont(new Font("",Font.BOLD,20));
add(btn1);
add(btn2);
add(btn3);
add(btn4);
add(btn5);
btn1.addActionListeners(this);
btn2.addActionListeners(this);
btn3.addActionListeners(this);
btn4.addActionListeners(this);
btn5.addActionListeners(this);
}
pubilc void actionPorformed(ActionEvent e){
String cmd=e.getActioncommand();
if(cmd.equles(bnt5)){
if(cmd.equles(bnt1)){
String s=+(tname1.getText()+tname2.getText());
}
if(cmd.equles(bnt2)){
String s=+(tname1.getText()-tname2.getText());
}
if(cmd.equles(bnt3)){
String s=+(tname1.getText()*tname2.getText());
}
if(cmd.equles(bnt4)){
String s=+(tname1.getText()/tname2.getText());
}
}
}
}

Answer 1

有点乱啊
看了会没法下手
不好意思

Answer 2

你的代码逻辑还有些问题，我又改了一下，现在能用了

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class jiemian extends Applet implements ActionListener
{ int flag=0;
Label Nname1=new Label("数1");
Label Nname2=new Label("数2");
TextField tname1=new TextField();
TextField tname2=new TextField();
TextField tname3=new TextField();
Button btn1=new Button("+");
Button btn2=new Button("-");
Button btn3=new Button("*");
Button btn4=new Button("/");
Button btn5=new Button("=");
public void init(){
this.setLayout(null);
Nname1.setBounds(10,30,100,40);
Nname1.setFont(new Font("",Font.BOLD,40));
Nname1.setForeground(Color.cyan);
Nname1.setBounds(10,30,80,40);
Nname1.setFont(new Font("",Font.BOLD,40));
add(Nname1);
Nname2.setBounds(370,30,100,40);
Nname2.setFont(new Font("",Font.BOLD,40));
Nname2.setForeground(Color.cyan);
Nname2.setBounds(10,30,80,40);
Nname2.setFont(new Font("",Font.BOLD,40));
add(Nname2);
tname1.setBounds(120,30,200,40);
tname1.setFont(new Font("",Font.BOLD,40));
tname2.setBounds(480,30,200,40);
tname2.setFont(new Font("",Font.BOLD,40));
tname3.setBounds(730,30,200,40);
tname3.setFont(new Font("",Font.BOLD,40));
add(tname1);
add(tname2);
add(tname3);
btn1.setBounds(330,0,30,30);
btn1.setFont(new Font("",Font.BOLD,20));
btn2.setBounds(330,40,30,30);
btn2.setFont(new Font("",Font.BOLD,20));
btn3.setBounds(330,80,30,30);
btn3.setFont(new Font("",Font.BOLD,20));
btn4.setBounds(330,120,30,30);
btn4.setFont(new Font("",Font.BOLD,20));
btn5.setBounds(690,30,30,30);
btn5.setFont(new Font("",Font.BOLD,20));
add(btn1);
add(btn2);
add(btn3);
add(btn4);
add(btn5);
btn1.addActionListener(this);
btn2.addActionListener(this);
btn3.addActionListener(this);
btn4.addActionListener(this);
btn5.addActionListener(this);
btn1.setActionCommand("btn1");
btn2.setActionCommand("btn2");
btn3.setActionCommand("btn3");
btn4.setActionCommand("btn4");
btn5.setActionCommand("btn5");
}
public void actionPerformed(ActionEvent e){
String cmd=e.getActionCommand();
if(cmd.equals("btn5")){
if(flag==1){
String s=String.valueOf(Integer.parseInt(tname1.getText())+Integer.parseInt(tname2.getText()));
tname3.setText(s);
}
if(flag==2){
String s=String.valueOf(Integer.parseInt(tname1.getText())-Integer.parseInt(tname2.getText()));
tname3.setText(s);
}
if(flag==3){
String s=String.valueOf(Integer.parseInt(tname1.getText())*Integer.parseInt(tname2.getText()));
tname3.setText(s);
}
if(flag==4){
String s=String.valueOf(Integer.parseInt(tname1.getText())/Integer.parseInt(tname2.getText()));
tname3.setText(s);
}
}else if(cmd.equals("btn1")){
flag=1;
}else if(cmd.equals("btn2")){
flag=2;
}else if(cmd.equals("btn3")){
flag=3;
}else if(cmd.equals("btn4")){
flag=4;
}
}
/* public static void main(String ss[]){
jiemian j=new jiemian();
j.setVisible(true);
}*/
}