java代码例子复杂 java太复杂了

Java程序代码

import java.awt.*;//计算器实例

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import java.awt.event.*;

public class calculator

{

public static void main(String args[])

{

MyWindow my=new MyWindow("计算器");

}

}

class MyWindow extends Frame implements ActionListener

{ StringBuffer m=new StringBuffer();

int p;

TextField tex;

Button b0,b1,b2,b3,b4,b5,b6,b7,b8,b9,jia,jian,cheng,chu,deng,dian,qingling,kaifang;

MyWindow(String s)

{

super(s);

//StringBuffer s2=new StringBuffer();

//String s;

tex=new TextField(18);

b0=new Button(" 0 ");

b1=new Button(" 1 ");

b2=new Button(" 2 ");

b3=new Button(" 3 ");

b4=new Button(" 4 ");

b5=new Button(" 5 ");

b6=new Button(" 6 ");

b7=new Button(" 7 ");

b8=new Button(" 8 ");

b9=new Button(" 9 ");

dian=new Button(" . ");

jia=new Button(" + ");

jian=new Button(" - ");

cheng=new Button(" × ");

chu=new Button(" / ");

deng=new Button(" = ");

qingling=new Button(" 清零 ");

kaifang=new Button(" √ ");

setLayout(new FlowLayout());

add(tex);

add(b0);

add(b1);

add(b2);

add(b3);

add(b4);

add(b5);

add(b6);

add(b7);

add(b8);

add(b9);

add(dian);

add(jia);

add(jian);

add(cheng);

add(chu);

add(kaifang);

add(qingling);

add(deng);

b0.addActionListener(this);

b1.addActionListener(this);

b2.addActionListener(this);

b3.addActionListener(this);

b4.addActionListener(this);

b5.addActionListener(this);

b6.addActionListener(this);

b7.addActionListener(this);

b8.addActionListener(this);

b9.addActionListener(this);

jia.addActionListener(this);

jian.addActionListener(this);

cheng.addActionListener(this);

chu.addActionListener(this);

dian.addActionListener(this);

deng.addActionListener(this);

qingling.addActionListener(this);

kaifang.addActionListener(this);

setBounds(200,200,160,280);

setResizable(false);//不可改变大小

setVisible(true);

validate();

addWindowListener(new WindowAdapter()

{ public void windowClosing(WindowEvent ee)

{ System.exit(0);

}

});

}

public void actionPerformed(ActionEvent e)

{

if(e.getSource()==b0)

{

m=m.append("0");

tex.setText(String.valueOf(m));

}

if(e.getSource()==b1)

{

m=m.append("1"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b2)

{

m=m.append("2"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b3)

{

m=m.append("3"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b4)

{

m=m.append("4"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b5)

{

m=m.append("5"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b6)

{

m=m.append("6"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b7)

{

m=m.append("7"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b8)

{

m=m.append("8"); tex.setText(String.valueOf(m));

}

if(e.getSource()==b9)

{

m=m.append("9"); tex.setText(String.valueOf(m));

}

if(e.getSource()==jia)

{

m=m.append("+"); tex.setText(String.valueOf(m));

}

if(e.getSource()==jian)

{

m=m.append("-"); tex.setText(String.valueOf(m));

}

if(e.getSource()==cheng)

{

m=m.append("*"); tex.setText(String.valueOf(m));

}

if(e.getSource()==chu)

{

m=m.append("/"); tex.setText(String.valueOf(m));

}

if(e.getSource()==dian)

{

m=m.append("."); tex.setText(String.valueOf(m));

}

String mm=String.valueOf(m);

int p1=mm.indexOf("+");

int p2=mm.indexOf("-");

int p3=mm.indexOf("*");

int p4=mm.indexOf("/");

if(p1!=-1)

{

p=p1;

}

else if(p3!=-1)

{

p=p3;

}

else if(p2!=-1)

{

p=p2;

}

else if(p4!=-1)

{

p=p4;

}

if(e.getSource()==deng)

{

String m1=mm.substring(0,p);

String m2=mm.substring(p+1);

String ch=mm.substring(p,p+1);

//System.out.println(m1);

//System.out.println(m2);

//System.out.println(ch);

if(ch.equals("+"))

{

float n1=Float.parseFloat(m1);

float n2=Float.parseFloat(m2);

float sum=n1+n2;

String su=String.valueOf(sum);

tex.setText(su);

}

if(ch.equals("-"))

{

float n1=Float.parseFloat(m1);

float n2=Float.parseFloat(m2);

float sum=n1-n2;

String su=String.valueOf(sum);

tex.setText(su);

}

if(ch.equals("*"))

{

float n1=Float.parseFloat(m1);

float n2=Float.parseFloat(m2);

float sum=n1*n2;

String su=String.valueOf(sum);

tex.setText(su);

}

if(ch.equals("/"))

{

float n1=Float.parseFloat(m1);

float n2=Float.parseFloat(m2);

float sum=n1/n2;

String su=String.valueOf(sum);

tex.setText(su);

}

}

if(e.getSource()==qingling)

{StringBuffer kk=new StringBuffer();

m=kk;

tex.setText("0");

// System.out.println(mm);

}

if(e.getSource()==kaifang)

{

String t=tex.getText();

float num=Float.parseFloat(t);

double nub=Math.sqrt(num);

tex.setText(String.valueOf(nub));

}

}

}

java编程题，自己觉得又点难(求高手写代码)

//Color类

public class Color {

private String colorName;

final public void setColor(String color){

this.colorName = color;

}

public String getColor(){

return this.colorName;

}

}

//White类

public class White extends Color{

public White(){

this.setColor("white");

}

public String getColor() {

return super.getColor();

}

}

//Red类

public class Red extends White{

public Red(){

this.setColor("Red");

}

}

//Prism类

public class Prism {

static public void activePrism(Color c){

if(c.getColor().equals("white")){

Red r = new Red();

Blue b = new Blue();

System.out.println(r.getColor());

System.out.println(b.getColor());

}

else{

return;

}

}

}

//测试类

public class ColorTest {

public static void main(String[] args) {

White w = new White();

Prism.activePrism(w);

}

}

其他颜色自己写吧。

求java小程序代码，500行左右。。大作业用。追加50

import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

class mypanel extends Panel implements MouseListener

{

int chess[][] = new int[11][11];

boolean Is_Black_True;

mypanel()

{

Is_Black_True = true;

for(int i = 0;i 11;i++)

{

for(int j = 0;j 11;j++)

{

chess[i][j] = 0;

}

}

addMouseListener(this);

setBackground(Color.BLUE);

setBounds(0, 0, 360, 360);

setVisible(true);

}

public void mousePressed(MouseEvent e)

{

int x = e.getX();

int y = e.getY();

if(x 25 || x 330 + 25 ||y 25 || y 330+25)

{

return;

}

if(chess[x/30-1][y/30-1] != 0)

{

return;

}

if(Is_Black_True == true)

{

chess[x/30-1][y/30-1] = 1;

Is_Black_True = false;

repaint();

Justisewiner();

return;

}

if(Is_Black_True == false)

{

chess[x/30-1][y/30-1] = 2;

Is_Black_True = true;

repaint();

Justisewiner();

return;

}

}

void Drawline(Graphics g)

{

for(int i = 30;i = 330;i += 30)

{

for(int j = 30;j = 330; j+= 30)

{

g.setColor(Color.WHITE);

g.drawLine(i, j, i, 330);

}

}

for(int j = 30;j = 330;j += 30)

{

g.setColor(Color.WHITE);

g.drawLine(30, j, 330, j);

}

}

void Drawchess(Graphics g)

{

for(int i = 0;i 11;i++)

{

for(int j = 0;j 11;j++)

{

if(chess[i][j] == 1)

{

g.setColor(Color.BLACK);

g.fillOval((i + 1) * 30 - 8, (j + 1) * 30 - 8, 16, 16);

}

if(chess[i][j] == 2)

{

g.setColor(Color.WHITE);

g.fillOval((i + 1) * 30 - 8, (j + 1) * 30 - 8, 16, 16);

}

}

}

}

void Justisewiner()

{

int black_count = 0;

int white_count = 0;

int i = 0;

for(i = 0;i 11;i++)//横向判断

{

for(int j = 0;j 11;j++)

{

if(chess[i][j] == 1)

{

black_count++;

if(black_count == 5)

{

JOptionPane.showMessageDialog(this, "黑棋胜利");

Clear_Chess();

return;

}

}

else

{

black_count = 0;

}

if(chess[i][j] == 2)

{

white_count++;

if(white_count == 5)

{

JOptionPane.showMessageDialog(this, "白棋胜利");

Clear_Chess();

return;

}

}

else

{

white_count = 0;

}

}

}

for(i = 0;i 11;i++)//竖向判断

{

for(int j = 0;j 11;j++)

{

if(chess[j][i] == 1)

{

black_count++;

if(black_count == 5)

{

JOptionPane.showMessageDialog(this, "黑棋胜利");

Clear_Chess();

return;

}

}

else

{

black_count = 0;

}

if(chess[j][i] == 2)

{

white_count++;

if(white_count == 5)

{

JOptionPane.showMessageDialog(this, "白棋胜利");

Clear_Chess();

return;

}

}

else

{

white_count = 0;

}

}

}

for(i = 0;i 7;i++)//左向右斜判断

{

for(int j = 0;j 7;j++)

{

for(int k = 0;k 5;k++)

{

if(chess[i + k][j + k] == 1)

{

black_count++;

if(black_count == 5)

{

JOptionPane.showMessageDialog(this, "黑棋胜利");

Clear_Chess();

return;

}

}

else

{

black_count = 0;

}

if(chess[i + k][j + k] == 2)

{

white_count++;

if(white_count == 5)

{

JOptionPane.showMessageDialog(this, "白棋胜利");

Clear_Chess();

return;

}

}

else

{

white_count = 0;

}

}

}

}

for(i = 4;i 11;i++)//右向左斜判断

{

for(int j = 6;j = 0;j--)

{

for(int k = 0;k 5;k++)

{

if(chess[i - k][j + k] == 1)

{

black_count++;

if(black_count == 5)

{

JOptionPane.showMessageDialog(this, "黑棋胜利");

Clear_Chess();

return;

}

}

else

{

black_count = 0;

}

if(chess[i - k][j + k] == 2)

{

white_count++;

if(white_count == 5)

{

JOptionPane.showMessageDialog(this, "白棋胜利");

Clear_Chess();

return;

}

}

else

{

white_count = 0;

}

}

}

}

}

void Clear_Chess()

{

for(int i=0;i11;i++)

{

for(int j=0;j11;j++)

{

chess[i][j]=0;

}

}

repaint();

}

public void paint(Graphics g)

{

Drawline(g);

Drawchess(g);

}

public void mouseExited(MouseEvent e){}

public void mouseEntered(MouseEvent e){}

public void mouseReleased(MouseEvent e){}

public void mouseClicked(MouseEvent e){}

}

class myframe extends Frame implements WindowListener

{

mypanel panel;

myframe()

{

setLayout(null);

panel = new mypanel();

add(panel);

panel.setBounds(0,23, 360, 360);

setTitle("单人版五子棋");

setBounds(200, 200, 360, 383);

setVisible(true);

addWindowListener(this);

}

public void windowClosing(WindowEvent e)

{

System.exit(0);

}

public void windowDeactivated(WindowEvent e){}

public void windowActivated(WindowEvent e){}

public void windowOpened(WindowEvent e){}

public void windowClosed(WindowEvent e){}

public void windowIconified(WindowEvent e){}

public void windowDeiconified(WindowEvent e){}

}

public class mywindow

{

public static void main(String argc [])

{

myframe f = new myframe();

}

}

求一个50行左右的JAVA代码，最好每行带注释，谢谢啦

/*这个相当详细了.

程序也不算太难.而且给老师看的时候效果比较好.因为有图形化界面,又实现一个比较实用的功能.老师会比较高兴的.

建立一个文件名为Change.java就可以编译了*/

/*

* 这个程序实现输入身高算出标准体重,输入体重,算出身高的功能

*/

import java.awt.*; //导入相关类包,这才样使用相应awt图形界面的类

import java.awt.event.*;//同上

public class Change extends Frame { //定义一个类Change, 父类是Frame(图形界面的)

Button b = new Button("互查"); //创建一个按钮的对象b,显示为"互查"

Label l1 = new Label("身高(cm)");//创建一个lable.显示身高

Label l2 = new Label("体重(kg)");//创建一个lable 显示体重

double heigth, weigth; //定义变量

double x, y; //定义变量

TextField tf1 = new TextField(null, 10);//添加Text框

TextField tf2 = new TextField(null, 10);//添加Text框

public Change() {//类的构造函数,完成初始化

super("互查表");//创建窗口,标题为互查表

setLayout(new FlowLayout(FlowLayout.LEFT));//设置布局

add(l1);//把lable 身高放到window里

add(tf1);//把Text 框 放到窗口上

add(l2); //把lable 体重放到window里

add(tf2);//Test放到窗口里

add(b);//把button放到窗口上

pack();//自动放到窗口里排列上边的组件

setVisible(true);//可以让用户看到窗口

addWindowListener(new WindowAdapter() {//如果按 X, 关闭窗口

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

b.addActionListener(new ButtonListener());//添加button监听函数

}

class ButtonListener implements ActionListener {//实现click button时功能操作

public void actionPerformed(ActionEvent e) {//当click调用

if (tf1.getText()!=null) {//检查tf1 test 是否为空

try {//取异常

x = Double.parseDouble(tf1.getText());//字符转为double型

weigth = (x - 100) * 0.9;//算重量

tf2.setText("" + weigth);//显示重量

} catch (NumberFormatException ex) {

tf1.setText("");//如果输入不是数字,设为空

}

}

if (tf1.getText().equals("")==true){//tf1是否为空

y = Double.parseDouble(tf2.getText());//把tf2里的文本转为double 型 的

heigth = y / 0.9 + 100; //算身高根据重量

tf1.setText("" + heigth);}//显示身高

}

}

public static void main(String[] args) {//主函数,程序入口

new Change(); //建立类Change的对象,并调用他的构造函数Change().显示窗口

}

}

求一个JAVA多线程例子，最好有代码，谢谢啦！

package a.b.test;

import java.util.Date;

import java.util.concurrent.Callable;

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

import java.util.concurrent.Future;

public class Calculate1000 implements CallableInteger{

public Calculate1000(){}

public Calculate1000(int a, int b){

this.a = a;

this.b = b;

}

int a;

int b;

/**

* @param args

* @throws Exception

*/

public static void main(String[] args) throws Exception {

//同步

Calculate1000 ca1 = new Calculate1000();

Date ds1 = new Date();

int result = 0;

for(int i = 1 ; i = 1000 ; i++){

result = ca1.add(i, result);

}

System.out.println(result);

System.out.println("同步用时" + (new Date().getTime() - ds1.getTime()) + "MS");

//异步

Date ds2 = new Date();

result = 0;

ExecutorService es = Executors.newFixedThreadPool(2);

FutureInteger future1 = es.submit(new Calculate1000(1,500));

FutureInteger future2 = es.submit(new Calculate1000(501,1000));

result = future1.get() + future2.get();

System.out.println(result);

System.out.println("异步用时" + (new Date().getTime() - ds2.getTime()) + "MS");

es.shutdown();

}

private int add(int a, int b) throws Exception{

Thread.sleep(10);

return a + b;

}

@Override

public Integer call() throws Exception {

int res = 0;

for(int i = a ; i = b ; i++){

res = this.add(res, i);

}

return res;

}

}

楼主你试一下这段代码行不行，行的话请采纳！