俄罗斯方块 Java源代码 Eclipse能运行的。要求如下图，谢谢

import java.awt.*;

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import java.awt.event.*;

import javax.swing.*;

public class Els extends JFrame implements KeyListener,Runnable

{

public Els()

{

setSize(240,320);

setUndecorated(true);

int H=(int) (this.getToolkit().getScreenSize().height);

int W=(int) (this.getToolkit().getScreenSize().width);

setLocation(W/2-120,H/2-160);

setResizable(false);

setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

}

public void paint(Graphics g)

{

super.paint(g);

Graphics2D g2=(Graphics2D)g;

g2.setColor(Color.darkGray.brighter().brighter());

//绘制小框格

for(int m=192;m=232;m+=10)

{

g2.drawLine(m, 52, m,92);

}

for(int m=52;m=92;m+=10)

{

g2.drawLine(192, m, 232, m);

}

//绘制大框格

for(int m=0;m=180;m+=15)

{

g2.drawLine(m, 0, m, 300);

}

for(int m=0;m=300;m+=15)

{

g2.drawLine(0, m, 180, m);

}

//将值不非0的格子涂黑

for(int i=1;i13;i++)

{

for(int j=0;j20;j++)

{

g2.setColor(Color.DARK_GRAY);

if (o[i][j]!=0) g2.fillRect(15*i-13, 15*j+2, 13, 13);

} }

//在小框格中绘制下一个的模型

switch(nextMODE)

{

case 0: g2.fillRect(204, 54, 8, 8);

g2.fillRect(204, 64, 8, 8);

g2.fillRect(204, 74, 8, 8);

g2.fillRect(204, 84, 8, 8);

break;

case 1: g2.fillRect(194, 64, 8, 8);

g2.fillRect(204, 64, 8, 8);

g2.fillRect(214, 64, 8, 8);

g2.fillRect(224, 64, 8, 8);

break;

case 2: g2.fillRect(214, 64, 8, 8);

g2.fillRect(214, 74, 8, 8);

g2.fillRect(214, 84, 8, 8);

g2.fillRect(204, 84, 8, 8);

break;

case 3: g2.fillRect(204, 64, 8, 8);

g2.fillRect(204, 74, 8, 8);

g2.fillRect(214, 74, 8, 8);

g2.fillRect(224, 74, 8, 8);

break;

case 4: g2.fillRect(204, 64, 8, 8);

g2.fillRect(214, 64, 8, 8);

g2.fillRect(204, 74, 8, 8);

g2.fillRect(204, 84, 8, 8);

break;

case 5: g2.fillRect(204, 64, 8, 8);

g2.fillRect(214, 64, 8, 8);

g2.fillRect(224, 64, 8, 8);

g2.fillRect(224, 74, 8, 8);

break;

case 6: g2.fillRect(204, 54, 8, 8);

g2.fillRect(204, 64, 8, 8);

g2.fillRect(204, 74, 8, 8);

g2.fillRect(214, 74, 8, 8);

break;

case 7: g2.fillRect(204, 74, 8, 8);

g2.fillRect(214, 74, 8, 8);

g2.fillRect(224, 74, 8, 8);

g2.fillRect(224, 64, 8, 8);

break;

case 8: g2.fillRect(204, 64, 8, 8);

g2.fillRect(214, 64, 8, 8);

g2.fillRect(214, 74, 8, 8);

g2.fillRect(214, 84, 8, 8);

break;

case 9: g2.fillRect(204, 64, 8, 8);

g2.fillRect(214, 64, 8, 8);

g2.fillRect(224, 64, 8, 8);

g2.fillRect(204, 74, 8, 8);

break;

case 10: g2.fillRect(204, 64, 8, 8);

g2.fillRect(204, 74, 8, 8);

g2.fillRect(214, 74, 8, 8);

g2.fillRect(214, 84, 8, 8);

break;

case 11: g2.fillRect(204, 74, 8, 8);

g2.fillRect(214, 74, 8, 8);

g2.fillRect(214, 64, 8, 8);

g2.fillRect(224, 64, 8, 8);

break;

case 12: g2.fillRect(214, 64, 8, 8);

g2.fillRect(214, 74, 8, 8);

g2.fillRect(204, 74, 8, 8);

g2.fillRect(204, 84, 8, 8);

break;

case 13: g2.fillRect(204, 64, 8, 8);

g2.fillRect(214, 64, 8, 8);

g2.fillRect(214, 74, 8, 8);

g2.fillRect(224, 74, 8, 8);

break;

case 14: g2.fillRect(204, 64, 8, 8);

g2.fillRect(214, 64, 8, 8);

g2.fillRect(204, 74, 8, 8);

g2.fillRect(214, 74, 8, 8);

break;

} g2.setColor(Color.black);

g2.drawLine(180, 0, 180, 300);

g2.setColor(Color.DARK_GRAY);

g2.drawString("LEVEL", 194, 10);

g2.drawString(""+LEVEL, 210, 28);

g2.drawString("NEXT", 196, 45);

g2.drawString("SCORE",193, 110);

g2.drawString(""+SCORE,205, 130);

g2.drawString("Xiong", 205, 160);

g2.drawString("Xuan", 205, 180);

}

//方块下落的方法

public void down()

{

Y++;

switch(MODE)

{

case 0: o[X+2][Y]=1;

o[X+2][Y+1]=1;

o[X+2][Y+2]=1;

o[X+2][Y+3]++;

o[X+2][Y-1]=0;

break;

case 1: o[X][Y+1]++;

o[X+1][Y+1]++;

o[X+2][Y+1]++;

o[X+3][Y+1]++;

o[X][Y]=0;

o[X+1][Y]=0;

o[X+2][Y]=0;

o[X+3][Y]=0;

break;

case 2: o[X+2][Y]=1;

o[X+2][Y+1]=1;

o[X+2][Y+2]++;

o[X+1][Y+2]++;

o[X+2][Y-1]=0;

o[X+1][Y+1]=0;

break;

case 3: o[X][Y]=1;

o[X][Y+1]++;

o[X+1][Y+1]++;

o[X+2][Y+1]++;

o[X][Y-1]=0;

//o[X][Y]=0;

o[X+1][Y]=0;

o[X+2][Y]=0;

break;

case 4: o[X+1][Y]=1;

o[X+2][Y]++;

o[X+1][Y+1]=1;

o[X+1][Y+2]++;

o[X+1][Y-1]=0;

o[X+2][Y-1]=0;

break;

case 5: o[X][Y]++;

o[X+1][Y]++;

o[X+2][Y]=1;

o[X+2][Y+1]++;

o[X][Y-1]=0;

o[X+1][Y-1]=0;

o[X+2][Y-1]=0;

break;

case 6: o[X+1][Y]=1;

o[X+1][Y+1]=1;

o[X+1][Y+2]++;

o[X+2][Y+2]++;

o[X+1][Y-1]=0;

//o[X+1][Y]=0;

//o[X+1][Y+1]=0;

o[X+2][Y+1]=0;

break;

case 7: o[X][Y+1]++;

o[X+1][Y+1]++;

o[X+2][Y+1]++;

o[X+2][Y]=1;

o[X][Y]=0;

o[X+1][Y]=0;

//o[X+2][Y]=0;

o[X+2][Y-1]=0;

break;

case 8: o[X+1][Y]++;

o[X+2][Y]=1;

o[X+2][Y+1]=1;

o[X+2][Y+2]++;

o[X+1][Y-1]=0;

o[X+2][Y-1]=0;

//o[X+2][Y]=0;

//o[X+2][Y+1]=0;

break;

case 9: o[X+1][Y]=1;

o[X+2][Y]++;

o[X+3][Y]++;

o[X+1][Y+1]++;

o[X+1][Y-1]=0;

o[X+2][Y-1]=0;

o[X+3][Y-1]=0;

//o[X+1][Y]=0;

break;

case 10:o[X+1][Y]=1;

o[X+1][Y+1]++;

o[X+2][Y+1]=1;

o[X+2][Y+2]++;

o[X+1][Y-1]=0;

//o[X+1][Y]=0;

o[X+2][Y]=0;

//o[X+2][Y+1]=0;

break;

case 11:o[X+2][Y]=1;

o[X+3][Y]++;

o[X+1][Y+1]++;

o[X+2][Y+1]++;

o[X+2][Y-1]=0;

o[X+3][Y-1]=0;

o[X+1][Y]=0;

//o[X+2][Y]=0;

break;

case 12:o[X+1][Y+1]=1;

o[X+2][Y+1]++;

o[X+1][Y+2]++;

o[X+2][Y]=1;

o[X+1][Y]=0;

//o[X+2][Y]=0;

//o[X+1][Y+1]=0;

o[X+2][Y-1]=0;

break;

case 13:o[X+1][Y]++;

o[X+2][Y]=1;

o[X+2][Y+1]++;

o[X+3][Y+1]++;

o[X+1][Y-1]=0;

o[X+2][Y-1]=0;

//o[X+2][Y]=0;

o[X+3][Y]=0;

break;

case 14:o[X+1][Y]=1;

o[X+2][Y]=1;

o[X+1][Y+1]++;

o[X+2][Y+1]++;

o[X+1][Y-1]=0;

o[X+2][Y-1]=0;

//o[X+1][Y]=0;

//o[X+2][Y]=0;

break;

}

//如果碰撞，则自动上升一格

for(int i=0;i13;i++)

{

for(int j=0;j21;j++)

{

if (o[i][j]==2) up();

}

}

}

急！急！求java计算器源代码 最后能出如图这样的界面并能运行 急啊 好的翻倍追加分啊

import java.awt.BorderLayout;

import java.awt.Button;

import java.awt.FlowLayout;

import java.awt.Frame;

import java.awt.GridLayout;

import java.awt.Panel;

import java.awt.TextField;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

public class CalculatorGUI {

private Frame f;

private Panel p1, p2;

private Button b0, b1, b2, b3, b4, b5, b6, b7, b8, b9;

private Button bPoint, bAdd, bDec, bMul, bDiv, bCal;

private TextField tf;

private String s, op;

private Calculator cal = new Calculator();

private boolean ifOp;

public CalculatorGUI() {

f = new Frame("Calculator");

p1 = new Panel();

p2 = new Panel();

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");

bPoint = new Button(".");

bAdd = new Button("+");

bDec = new Button("-");

bMul = new Button("*");

bDiv = new Button("/");

bCal = new Button("=");

tf = new TextField(25);

tf.setEditable(false);

}

public void launchFrame() {

f.setSize(220, 160);

f.setResizable(false);

f.addWindowListener(new myWindowListener());

p1.setLayout(new FlowLayout(FlowLayout.CENTER));

p1.add(tf);

f.add(p1, BorderLayout.NORTH);

p2.setLayout(new GridLayout(4, 4));

b0.addActionListener(new setLabelText_ActionListener());

b1.addActionListener(new setLabelText_ActionListener());

b2.addActionListener(new setLabelText_ActionListener());

b3.addActionListener(new setLabelText_ActionListener());

b4.addActionListener(new setLabelText_ActionListener());

b5.addActionListener(new setLabelText_ActionListener());

b6.addActionListener(new setLabelText_ActionListener());

b7.addActionListener(new setLabelText_ActionListener());

b8.addActionListener(new setLabelText_ActionListener());

b9.addActionListener(new setLabelText_ActionListener());

bPoint.addActionListener(new setLabelText_ActionListener());

bAdd.addActionListener(new setOperator_ActionListener());

bDec.addActionListener(new setOperator_ActionListener());

bMul.addActionListener(new setOperator_ActionListener());

bDiv.addActionListener(new setOperator_ActionListener());

bCal.addActionListener(new setOperator_ActionListener());

p2.add(b7);

p2.add(b8);

p2.add(b9);

p2.add(bAdd);

p2.add(b4);

p2.add(b5);

p2.add(b6);

p2.add(bDec);

p2.add(b1);

p2.add(b2);

p2.add(b3);

p2.add(bMul);

p2.add(b0);

p2.add(bPoint);

p2.add(bCal);

p2.add(bDiv);

f.add(p2, BorderLayout.SOUTH);

f.setVisible(true);

}

public void setTextFieldText_Temp() {

if (tf.getText().length() 15

(tf.getText().indexOf(".") == -1 || !s.equals("."))) {

tf.setText(tf.getText() + s);

} else {

tf.setText((tf.getText() + s).substring(0, 15));

}

}

public void setTextFieldText() {

if (ifOp) {

ifOp = false;

tf.setText("");

setTextFieldText_Temp();

} else {

setTextFieldText_Temp();

}

}

public static void main(String[] args) {

CalculatorGUI calculator = new CalculatorGUI();

calculator.launchFrame();

}

class myWindowListener extends WindowAdapter {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

}

class setLabelText_ActionListener implements ActionListener {

public void actionPerformed(ActionEvent e) {

Button tempB = (Button) e.getSource();

s = tempB.getLabel();

setTextFieldText();

}

}

class setOperator_ActionListener implements ActionListener {

public void actionPerformed(ActionEvent e) {

Button tempB = (Button) e.getSource();

op = tempB.getLabel();

if (op.equals("+")) {

tf.setText(cal.opAdd(tf.getText()));

ifOp = true;

} else if (op.equals("-")) {

tf.setText(cal.opSubtract(tf.getText()));

ifOp = true;

} else if (op.equals("*")) {

tf.setText(cal.opMultiply(tf.getText()));

ifOp = true;

} else if (op.equals("/")) {

tf.setText(cal.opDivide(tf.getText()));

ifOp = true;

} else if (op.equals("=")) {

tf.setText(cal.opEquals(tf.getText()));

ifOp = true;

}

}

}

}

class Calculator {

private String result = "0";

private int op = 0, add = 1, sub = 2, mul = 3, div = 4;

private double stringToDouble(String x) {

double y = Double.parseDouble(x);

return y;

}

private void operate(String x) {

double x1 = stringToDouble(x);

double y = stringToDouble(result);

switch (op) {

case 0:

result = x;

break;

case 1:

result = String.valueOf(y + x1);

break;

case 2:

result = String.valueOf(y - x1);

break;

case 3:

result = String.valueOf(y * x1);

break;

case 4:

if (x1 != 0) {

result = String.valueOf(y / x1);

} else {

result = "The divisor can't be zero!";

}

break;

}

}

public String opAdd(String x) {

operate(x);

op = add;

return result;

}

public String opSubtract(String x) {

operate(x);

op = sub;

return result;

}

public String opMultiply(String x) {

operate(x);

op = mul;

return result;

}

public String opDivide(String x) {

operate(x);

op = div;

return result;

}

public String opEquals(String x) {

operate(x);

op = 0;

return result;

}

public void opClean() {

op = 0;

result = "0";

}

}

求java绘图程序源代码（加注释），在如下图的基础上，在图案种类上添加圆角矩形，求代码

直线 是 Line2D

矩形是 Rectangle2D

弧 Arc2D

椭圆 Ellipse2D

圆角矩形是 RoundRectangle2D

上面的都在 java.awt.geom包里

JAVA用frame实现图中2个窗口 怎么写啊？

图片看起来很模糊，隐约看到需要一个登录窗口，那就分享一下以前练习的登录窗口demo吧。

先上效果图：

登录界面

源码如下：

AbsoluteLoginFrame.java

public class AbsoluteLoginFrame extends JFrame {

private static final int LOGIN_WIDTH = 600;

private static final int LOGIN_HEIGHT = 400;

private static final long serialVersionUID = -2381351968820980500L;

public AbsoluteLoginFrame(){

  //设置窗口标题

  setTitle("登录界面");

  //设置一个初始面板，填充整个窗口

  JPanel loginPanel = new JPanel();

  //设置背景颜色

  loginPanel.setBackground(new Color(204, 204, 204));//#CCC

  loginPanel.setLayout(null);

  JPanel centerPanel = new JPanel();

  centerPanel.setBackground(Color.WHITE);

  centerPanel.setBounds(114, 70, 360, 224);

  centerPanel.setLayout(null);

  JLabel jLabel = new JLabel("用户名：");

  jLabel.setOpaque(true);

  jLabel.setBackground(Color.YELLOW);

  jLabel.setBounds(60, 60, 54, 20);

  JLabel label = new JLabel("密    码：");

  label.setOpaque(true);

  label.setBackground(Color.CYAN);

  label.setBounds(60, 90, 54, 20);

  JTextField textField = new JTextField(15);

  textField.setBounds(130, 60, 166, 21);

  JPasswordField passwordField = new JPasswordField(15);

  passwordField.setBounds(130, 90, 166, 21);

  JButton jButton = new JButton("登录");

  jButton.setBounds(148, 120, 62, 28);

  centerPanel.add(jLabel);

  centerPanel.add(label);

  centerPanel.add(textField);

  centerPanel.add(jButton);

  centerPanel.add(passwordField);

  loginPanel.add(centerPanel);

  getContentPane().add(loginPanel);//将初始面板添加到窗口中

  setSize(LOGIN_WIDTH, LOGIN_HEIGHT);//设置窗口大小

  setLocation(Screen.getCenterPosition(LOGIN_WIDTH, LOGIN_HEIGHT));//设置窗口位置

  setDefaultCloseOperation(EXIT_ON_CLOSE);//设置窗口默认关闭方式

  setResizable(false);

  setVisible(true);

}

public static void main(String[] args) {

  new AbsoluteLoginFrame();

}

}

Screen.java

public class Screen {

private int width;

private int height;

public Screen(){

  Toolkit toolkit = Toolkit.getDefaultToolkit();

  Dimension screenSize = toolkit.getScreenSize();

  this.width = screenSize.width;

  this.height = screenSize.height;

}

public static Point getCenterPosition(int width, int height){

  Screen screen = new Screen();

  int x = (screen.getWidth() - width) / 2;

  int y = (screen.getHeight() - height) / 2;

  return new Point(x, y);

}

public int getWidth() {

  return width;

}

public void setWidth(int width) {

  this.width = width;

}

public int getHeight() {

  return height;

}

public void setHeight(int height) {

  this.height = height;

}

}