求大神用Java編寫出這個(gè)程序，要有具體代碼，萬分感激，定采納

按照你的要求編寫的JavaGUI程序如下：

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import?java.awt.GridLayout;

import?java.awt.event.ActionEvent;

import?java.awt.event.ActionListener;

import?javax.swing.JButton;

import?javax.swing.JFrame;

import?javax.swing.JPanel;

import?javax.swing.JTextField;

public?class?HH?extends?JFrame?implements?ActionListener{

JPanel?jp1=new?JPanel();

JPanel?jp2=new?JPanel();

JPanel?jp3=new?JPanel();

JTextField?jtf=new?JTextField(20);

JButton?jb1=new?JButton("顯示");

JButton?jb2=new?JButton("清除");

HH(){

jb1.addActionListener(this);

jb2.addActionListener(this);

jp1.setLayout(new?GridLayout(2,1));

jp3.add(jtf);

jp2.add(jb1);jp2.add(jb2);

jp1.add(jp3);jp1.add(jp2);

getContentPane().add(jp1);

setSize(300,?120);

setLocationRelativeTo(null);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

setVisible(true);

}

@Override

public?void?actionPerformed(ActionEvent?e)?{

if(e.getSource()==jb1){

jtf.setText("java程序設(shè)計(jì)");

}

if(e.getSource()==jb2){

jtf.setText("");

}

}

public?static?void?main(String[]?args)?{

new?HH();

}

}

急，求大神幫我用JAvA寫下下面這兩道題的代碼！！！！！！！！！！！

1）for:

import?javax.swing.*;

public?class?moren?{

public?static?void?main(String?agrs[]){

int?i=0,n=0,s=1;

n=Integer.parseInt(JOptionPane.showInputDialog("輸入N的值："));

if?(0?==?n)

s=1;

else

for?(i=1;i=n;i++)

s*=i;

JOptionPane.showMessageDialog(null,+n+"?的階乘為："+s,"階乘計(jì)算器",JOptionPane.PLAIN_MESSAGE);

}

}

2)while:

import?javax.swing.*;

public?class?moren?{

public?static?void?main(String?agrs[]){

int?i=1,n=0,s=1;

n=Integer.parseInt(JOptionPane.showInputDialog("輸入N的值："));

if?(0?==?n)

s=1;

else

while(i=n)

{

s*=i;

i++;

}

JOptionPane.showMessageDialog(null,+n+"?的階乘為："+s,"階乘計(jì)算器",JOptionPane.PLAIN_MESSAGE);

}

}

3)do-while:

import?javax.swing.*;

public?class?moren?{

public?static?void?main(String?agrs[]){

int?i=1,n=0,s=1;

n=Integer.parseInt(JOptionPane.showInputDialog("輸入N的值："));

if?(0?==?n)

s=1;

else

do{

s*=i;

i++;

}while(i=n);

JOptionPane.showMessageDialog(null,+n+"?的階乘為："+s,"階乘計(jì)算器",JOptionPane.PLAIN_MESSAGE);

}

}

2、import?javax.swing.*;

public?interface?Area{????//定義接口

?public?abstract?double?getArea();

}

class?Ellipse?implements?Area{???//定義類

?double?r1,r2;?//?定義兩個(gè)半徑

public?Ellipse(double?a,?double?b){???//構(gòu)造方法

r1=a;?r2=b;

}

public??double?getArea(){

double?mj=Math.PI*r1*r2;

return?mj;

}

public?static?void?main(String[]?args)?{

double?r1=0,r2=0;

r1=Float.parseFloat(JOptionPane.showInputDialog("輸入長半徑a："));

r2=Float.parseFloat(JOptionPane.showInputDialog("輸入短半徑b："));

Ellipse?e1=new?Ellipse(r1,r2);

JOptionPane.showMessageDialog(null,"此橢圓的面積為："+e1.getArea(),"橢圓面積計(jì)算器",JOptionPane.PLAIN_MESSAGE);

}

}

求助大神如何用Java寫出這兩個(gè)題目的代碼？

第一題

package baidu;

public class Student {

protected String name;

protected int age;

public Student(String name, int age) {

this.name = name;

this.age = age;

}

public void show(){

System.out.println("name = " + name);

System.out.println("age = " + age);

}

}

---------------------------------

package baidu;

public class Undergraduate extends Student {

private String degree;

public Undergraduate(String name, int age, String degree) {

super(name, age);

this.degree = degree;

}

public void show(){

System.out.println("name = " + name);

System.out.println("age = " + age);

System.out.println("degree = " + degree);

}

}

------------------------

package baidu;

public class TestRun {

public static void main(String[] args) {

Student s = new Student("singi",12);

s.show();

Undergraduate ug = new Undergraduate("lily",23,"本科");

ug.show();

}

}

輸出:

name = singi

age = 12

name = lily

age = 23

degree = 本科

第二題:

package baidu;

public class Man {

String name;

public Man(String name) {

this.name = name;

}

public void business(){

System.out.println("在方法內(nèi)輸出談生意");

}

}

----------------

package baidu;

public class SuperMan extends Man {

String name;

public SuperMan(String name, String name1) {

super(name);

this.name = name1;

}

@Override

public void business() {

System.out.println("在方法內(nèi)輸出談幾個(gè)億的大單子");

}

public void fly(){

System.out.println("在方法內(nèi)輸出超人不會飛");

}

}

------------------

package baidu;

public class TestMan {

public static void main(String[] args) {

Man m = new Man("singi");

System.out.println(m.name);

m.business();

SuperMan sm = new SuperMan("lily","xiaoming");

System.out.println(sm.name);

sm.business();

sm.fly();

}

}

輸出:

singi

在方法內(nèi)輸出談生意

xiaoming

在方法內(nèi)輸出談幾個(gè)億的大單子

在方法內(nèi)輸出超人不會飛

文章名稱：大神運(yùn)用java寫代碼 java寫代碼的思路
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