大一java代码题 java代码题目和答案

Java大一的题目求大神帮忙看看怎么写TAT求源代码

哈哈~网上很多哈，GUI我也不会，现学现卖一个

目前创新互联已为1000多家的企业提供了网站建设、域名、雅安服务器托管、网站托管运营、企业网站设计、扎赉诺尔网站维护等服务，公司将坚持客户导向、应用为本的策略，正道将秉承"和谐、参与、激情"的文化，与客户和合作伙伴齐心协力一起成长，共同发展。

package swing;

import javafx.embed.swing.JFXPanel;

import javax.swing.*;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.text.DateFormat;

import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Date;

/**

* @author wenxy

* @create 2020-05-01

*/

public class JavaFxDate {

public static void main(String[] args) {

// 创建 JFrame 实例

JFrame frame = new JFrame();

// Setting the width and height of frame

frame.setSize(310, 180);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

/* 创建面板，这个类似于 HTML 的 div 标签

* 我们可以创建多个面板并在 JFrame 中指定位置

* 面板中我们可以添加文本字段，按钮及其他组件。

*/

JPanel panel = new JPanel();

// 添加面板

frame.add(panel);

/*

* 调用用户定义的方法并添加组件到面板

*/

placeComponents(panel);

// 设置界面可见

frame.setVisible(true);

}

private static void placeComponents(JPanel panel) {

/* 布局部分我们这边不多做介绍

* 这边设置布局为 null

*/

panel.setLayout(null);

// 创建 JLabel

JLabel userLabel = new JLabel("请输入日期字符串");

userLabel.setBounds(5, 5, 300, 25);

panel.add(userLabel);

/*

* 创建文本域用于用户输入

*/

JTextField userText = new JTextField(20);

userText.setBounds(5, 40, 200, 25);

panel.add(userText);

// 创建 JLabel

JLabel showLable = new JLabel();

showLable.setBounds(5, 70, 300, 25);

panel.add(showLable);

// 创建登录按钮

JButton loginButton = new JButton("转换");

loginButton.setBounds(180, 40, 100, 25);

loginButton.addActionListener(new ActionListener() {

DateFormat input = new SimpleDateFormat("yyyy-MM-dd");

DateFormat output = new SimpleDateFormat("yyyy年MM月dd日");

{

input.setLenient(false);    // 设置严格按格式匹配

output.setLenient(false);

}

@Override

public void actionPerformed(ActionEvent actionEvent) {

try {

Date date = convert(userText.getText());

showLable.setText("成功:" + output.format(date));

showLable.setForeground(Color.GREEN);

} catch (WrongDateException e) {

showLable.setText(e.getMessage());

showLable.setForeground(Color.RED);

}

}

private Date convert(String text) throws WrongDateException {

try {

return input.parse(text);

} catch (ParseException e) {

throw new WrongDateException(text);

}

}

});

panel.add(loginButton);

}

static class WrongDateException extends Exception {

WrongDateException(String s) {

super(s + "不是合法的日期字符串");

}

}

}

大一编程入门java，这道题怎么做呢？

Employee .java

public class Employee {

private int empId;

private String empName;

private String empsex;

public int getEmpId() {

return empId;

}

public void setEmpId(int empId) {

this.empId = empId;

}

public String getEmpName() {

return empName;

}

public void setEmpName(String empName) {

this.empName = empName;

}

public String getEmpsex() {

return empsex;

}

public void setEmpsex(String empsex) {

this.empsex = empsex;

}

}

PartTimeEmployee.java

public class PartTimeEmployee extends Employee{

private double hourlyPay;

public double getHourlyPay() {

return hourlyPay;

}

public void setHourlyPay(double hourlyPay) {

this.hourlyPay = hourlyPay;

}

}

测试类Test.java

public class Test{

public static void main(String[] args) {

PartTimeEmployee pe=new PartTimeEmployee();

pe.setEmpId(1);

pe.setEmpName("莉莉");

pe.setEmpsex("女");

pe.setHourlyPay(50.0);

System.out.println("雇员编号："+pe.getEmpId());

System.out.println("雇员姓名："+pe.getEmpName());

System.out.println("雇员性别："+pe.getEmpsex());

System.out.println("每小时工资："+pe.getHourlyPay());

}

}

（大一java题目） 多线程

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

import java.util.*;

import java.text.*;

public class Win extends JFrame implements Runnable

{

public static void main(String[] args)

{

new Win();

}

Win()

{

setLayout(new GridLayout(2,2));

add(new JLabel("当前时间："));

add(timetxt=new JTextField(25));

add(new JLabel("当前数字："));

add(numtxt=new JTextField(25));

// setSize(400,300);

// setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

pack();

setResizable(false);

setLocationRelativeTo(null);

addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)

{

exit=true;

dispose();

System.exit(0);

}

});

new Thread(this).start();

new Thread(new Runnable()

{

public void run()

{

while(!exit)

{

try

{

Thread.sleep(2000);

n++;

numtxt.setText(String.valueOf(n));

n%=10;

}

catch(Exception ex)

{

}

}

}

private int n=0;

}).start();

setVisible(true);

}

public void run()

{

while(!exit)

{

try

{

timetxt.setText(sdf.format(new Date()));

Thread.sleep(1000);

}

catch(Exception ex)

{

}

}

}

private boolean exit=false;

private JTextField timetxt,numtxt;

private final SimpleDateFormat sdf=new SimpleDateFormat("H:m:s");

}

大一编程入门java语言，这道题代码怎么打呢？

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

import javax.swing.event.*;

public class PainterPanel extends JPanel implements MouseListener{

int shape=-1; //图案类型

Point[] point=new Point[2]; //记录鼠标拖动的起始点和终点

public PainterPanel(){

super(); //调用父类构造函数

this.setBackground(Color.white); //设置背景颜色

point[0]=new Point(-1,-1); //初始化变量

point[1]=new Point(-1,-1);

addMouseListener(this); //增加鼠标事件

}

public void mouseReleased(MouseEvent e){ //鼠标释放事件

point[1]=new Point(e.getX(),e.getY()); //设置终点位置

repaint(); //重绘屏幕

}

public void mouseEntered(MouseEvent e){}

public void mouseExited(MouseEvent e){}

public void mouseClicked(MouseEvent e){}

public void mousePressed(MouseEvent e){ //鼠标按下时事件

point[0]=new Point(e.getX(),e.getY()); //设置起始位置

}

public void paint(Graphics g){

super.paint(g);

switch (shape){ //根据shape绘制图形

case 0:

g.drawLine(point[0].x,point[0].y,point[1].x,point[1].y); //绘线

break;

case 1:

int width=point[1].x-point[0].x;

int height=point[1].y-point[0].y;

g.drawOval(point[0].x,point[0].y,width,height); //绘椭圆

break;

case 2:

width=point[1].x-point[0].x;

height=point[1].y-point[0].y;

g.drawRect(point[0].x,point[0].y,width,height); //绘矩形

break;

}

}

public void drawShape(int shape){

this.shape=shape;

}

}