Question

java 编程题

麻烦请朋友们帮忙，一共有两个编程题前三张图片是一道题，第四张图片是一道题，我需要这两道题的源代码（达到题目的要求）由于比较紧迫，请您在今晚八点之前发给我，谢谢

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Answer 1

少年 作业还是要自己搞啊 不然以后更惨.当然如果你以后不做这行无所谓了

Answer 2

这两道题并不难，有这时间你自己都琢磨出怎么写了

Answer 3

一看就是作业.

Answer 4

import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Vector;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JTextField;

public class JSimpleComputer extends JFrame implements ActionListener
{
private JTextField text1;
private JTextField text2;
private JTextField text3;
private JComboBox cb;
private JButton b;

public JSimpleComputer(){
text1 = new JTextField();
text2 = new JTextField();
text3 = new JTextField();
Vector<String> vector = new Vector<String>();
vector.add("+");
vector.add("-");
vector.add("*");
vector.add("/");
cb = new JComboBox(vector);
b = new JButton("=");

b.addActionListener(this);

Dimension preferredSize = new Dimension(50,30);
text1.setPreferredSize(preferredSize);
text2.setPreferredSize(preferredSize);
text3.setPreferredSize(preferredSize);
this.add(text1);
this.add(cb);
this.add(text2);
this.add(b);
this.add(text3);
this.setBounds(100, 100, 400, 100);

this.setLayout(new FlowLayout(FlowLayout.CENTER, 3, 3));
this.setVisible(true);

}

public static void main(String[] args){

new JSimpleComputer();
}

@Override
public void actionPerformed(ActionEvent e)
{
// TODO Auto-generated method stub
if(e.getSource() == b){
int number1 = Integer.parseInt(text1.getText());
int number2 = Integer.parseInt(text2.getText());
if(cb.getSelectedIndex() == 0){
text3.setText(number1 + number2 +"");

}else if(cb.getSelectedIndex() == 1){

text3.setText(number1 - number2 + "");

}else if(cb.getSelectedIndex() == 2){
text3.setText(number1 * number2 + "");

}else if(cb.getSelectedIndex() == 3){
if(text2.getText().equals("0") ){
JOptionPane.showMessageDialog(null, "除数不能为0", "系统提示", JOptionPane.PLAIN_MESSAGE);
}else{

text3.setText(number1/number2 + "");
}
}

}
}
}
我直接给答案吧 请采纳 想知道第二题 再给点分数啊

public class JThreadPrinter implements Runnable
{

private String tag;
private int a = 0;
private char b = 'A';

public JThreadPrinter(String tag){
this.tag = tag;
}

public static void main(String[] args){
JThreadPrinter printer = new JThreadPrinter("A");
JThreadPrinter printer2 = new JThreadPrinter("B");
Thread t = new Thread(printer);
Thread t2 = new Thread(printer2);
t.start();
t2.start();
}

public void run(){
if(tag.equals("A")){
while(true){
try
{
Thread.sleep(500);
}
catch (InterruptedException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(a);
if(a == 9){
a = 0;
}else{
a++;
}
}

}else{
while(true){
try
{
Thread.sleep(500);
}
catch (InterruptedException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println(b);
if(b == 'Z'){
b = 'A';
}else{
b++;
}
}
}
}

}

追问

朋友，非常感谢你能帮我，悬赏最高是200,那我再提问一次吧还剩150都给你了

追答

不用了