class Lefthand extends Thread { public void run(){for(int i=0;i<=5;i++){  System.out.println("You are Students!");try{   sleep(500);   }catch(InterruptedException e){ System.out.println("Lefthand error.");}    } }
}
class Righthand extends Thread {public void run(){for(int i=0;i<=5;i++){   System.out.println("I am a Teacher!");try{  sleep(300);  }catch(InterruptedException e){ System.out.println("Righthand error.");}}}
}
public class ThreadTest
{static Lefthand left;static Righthand right;public static void main(String[] args){     left=new Lefthand();right=new Righthand();left.start();right.start();}
}

class Lefthand implements Runnable { public void run(){for(int i=0;i<=5;i++){  System.out.println("You are Students!");try{   Thread.sleep(500);//休眠500毫秒
           }catch(InterruptedException e){ System.out.println("Lefthand error.");}    } }}
class Righthand implements Runnable {public void run(){for(int i=0;i<=5;i++){   System.out.println("I am a Teacher!");try{  Thread.sleep(300);//休眠300毫秒
             }catch(InterruptedException e){ System.out.println("Righthand error.");}}}}
public class ThreadTest
{public static void main(String[] args){   Righthand righthand = new Righthand();//新建一个righthand对象Lefthand lefthand = new Lefthand();//新建一个lefthand对象Thread right = new Thread(righthand);//start方法在Thread类中，新建Thread类
         right.start();Thread left=new Thread(lefthand);left.start();}
}

package bounce;import java.awt.geom.*;/*** A ball that moves and bounces off the edges of a rectangle* @version 1.33 2007-05-17* @author Cay Horstmann*/
public class Ball
{private static final int XSIZE = 15;private static final int YSIZE = 15;private double x = 0;private double y = 0;private double dx = 1;private double dy = 1;/*** Moves the ball to the next position, reversing direction if it hits one of the edges*/public void move(Rectangle2D bounds){x += dx;y += dy;if (x < bounds.getMinX()){x = bounds.getMinX();dx = -dx;}if (x + XSIZE >= bounds.getMaxX()){x = bounds.getMaxX() - XSIZE;dx = -dx;}if (y < bounds.getMinY()){y = bounds.getMinY();dy = -dy;}if (y + YSIZE >= bounds.getMaxY()){y = bounds.getMaxY() - YSIZE;dy = -dy;}}/*** Gets the shape of the ball at its current position.*/public Ellipse2D getShape(){return new Ellipse2D.Double(x, y, XSIZE, YSIZE);}
}

package bounce;import java.awt.*;
import java.util.*;
import javax.swing.*;/*** The component that draws the balls.* @version 1.34 2012-01-26* @author Cay Horstmann*/
public class BallComponent extends JPanel
{private static final int DEFAULT_WIDTH = 450;private static final int DEFAULT_HEIGHT = 350;private java.util.List<Ball> balls = new ArrayList<>();/*** Add a ball to the component.* @param b the ball to add*/public void add(Ball b){balls.add(b);}public void paintComponent(Graphics g){super.paintComponent(g); // erase backgroundGraphics2D g2 = (Graphics2D) g;for (Ball b : balls){g2.fill(b.getShape());}}public Dimension getPreferredSize() { return new Dimension(DEFAULT_WIDTH, DEFAULT_HEIGHT); }
}

package bounce;import java.awt.*;
import java.awt.event.*;
import javax.swing.*;/*** Shows an animated bouncing ball.* @version 1.34 2015-06-21* @author Cay Horstmann*/
public class Bounce
{public static void main(String[] args){EventQueue.invokeLater(() -> {JFrame frame = new BounceFrame();frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setVisible(true);});}
}/*** The frame with ball component and buttons.*/
class BounceFrame extends JFrame
{private BallComponent comp;public static final int STEPS = 1000;public static final int DELAY = 3;/*** Constructs the frame with the component for showing the bouncing ball and* Start and Close buttons*/public BounceFrame(){setTitle("Bounce");comp = new BallComponent();add(comp, BorderLayout.CENTER);JPanel buttonPanel = new JPanel();addButton(buttonPanel, "Start", event -> addBall());addButton(buttonPanel, "Close", event -> System.exit(0));add(buttonPanel, BorderLayout.SOUTH);pack();}/*** Adds a button to a container.* @param c the container* @param title the button title* @param listener the action listener for the button*/public void addButton(Container c, String title, ActionListener listener){JButton button = new JButton(title);c.add(button);button.addActionListener(listener);}/*** Adds a bouncing ball to the panel and makes it bounce 1,000 times.*/public void addBall(){try{Ball ball = new Ball();comp.add(ball);for (int i = 1; i <= STEPS; i++){ball.move(comp.getBounds());comp.paint(comp.getGraphics());Thread.sleep(DELAY);}}catch (InterruptedException e){}}
}

package bounceThread;import java.awt.*;
import java.awt.event.*;import javax.swing.*;/*** Shows animated bouncing balls.* @version 1.34 2015-06-21* @author Cay Horstmann*/
public class BounceThread
{public static void main(String[] args){EventQueue.invokeLater(() -> {JFrame frame = new BounceFrame();frame.setTitle("BounceThread");frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.setVisible(true);});}
}/*** The frame with panel and buttons.*/
class BounceFrame extends JFrame
{private BallComponent comp;public static final int STEPS = 1000;public static final int DELAY = 5;/*** Constructs the frame with the component for showing the bouncing ball and* Start and Close buttons*/public BounceFrame(){comp = new BallComponent();add(comp, BorderLayout.CENTER);JPanel buttonPanel = new JPanel();addButton(buttonPanel, "Start", event -> addBall());addButton(buttonPanel, "Close", event -> System.exit(0));add(buttonPanel, BorderLayout.SOUTH);pack();}/*** Adds a button to a container.* @param c the container* @param title the button title* @param listener the action listener for the button*/public void addButton(Container c, String title, ActionListener listener){JButton button = new JButton(title);c.add(button);button.addActionListener(listener);}/*** Adds a bouncing ball to the canvas and starts a thread to make it bounce*/public void addBall(){Ball ball = new Ball();comp.add(ball);Runnable r = () -> { try{  for (int i = 1; i <= STEPS; i++){ball.move(comp.getBounds());comp.repaint();Thread.sleep(DELAY);}}catch (InterruptedException e){}};Thread t = new Thread(r);t.start();}
}

class Race extends Thread {public static void main(String args[]) {Race[] runner=new Race[4];for(int i=0;i<4;i++) runner[i]=new Race( );for(int i=0;i<4;i++) runner[i].start( );runner[1].setPriority(MIN_PRIORITY);runner[3].setPriority(MAX_PRIORITY);}public void run( ) {for(int i=0; i<1000000; i++);System.out.println(getName()+"线程的优先级是"+getPriority()+"已计算完毕!");}
}

package unsynch;/*** This program shows data corruption when multiple threads access a data structure.* @version 1.31 2015-06-21* @author Cay Horstmann*/
public class UnsynchBankTest
{public static final int NACCOUNTS = 100;public static final double INITIAL_BALANCE = 1000;//期初余额public static final double MAX_AMOUNT = 1000;//最大数量public static final int DELAY = 10;//延时public static void main(String[] args){Bank bank = new Bank(NACCOUNTS, INITIAL_BALANCE);for (int i = 0; i < NACCOUNTS; i++){int fromAccount = i;Runnable r = () -> {try{while (true){int toAccount = (int) (bank.size() * Math.random());//生成随机数double amount = MAX_AMOUNT * Math.random();bank.transfer(fromAccount, toAccount, amount);Thread.sleep((int) (DELAY * Math.random()));}}catch (InterruptedException e){}            };Thread t = new Thread(r);t.start();}}
}

package unsynch;import java.util.*;/*** A bank with a number of bank accounts.* @version 1.30 2004-08-01* @author Cay Horstmann*/
public class Bank
{private final double[] accounts;/*** Constructs the bank.* @param n the number of accounts* @param initialBalance the initial balance for each account*/public Bank(int n, double initialBalance){accounts = new double[n];Arrays.fill(accounts, initialBalance);}/*** Transfers money from one account to another.* @param from the account to transfer from* @param to the account to transfer to* @param amount the amount to transfer*/public void transfer(int from, int to, double amount){if (accounts[from] < amount) return;System.out.print(Thread.currentThread());accounts[from] -= amount;System.out.printf(" %10.2f from %d to %d", amount, from, to);accounts[to] += amount;System.out.printf(" Total Balance: %10.2f%n", getTotalBalance());}/*** Gets the sum of all account balances.* @return the total balance*/public double getTotalBalance(){double sum = 0;for (double a : accounts)sum += a;return sum;}/*** Gets the number of accounts in the bank.* @return the number of accounts*/public int size(){return accounts.length;}
}

import java.awt.EventQueue;import javax.swing.JFrame;public class Mian {public static void main(String[] args) {EventQueue.invokeLater(() -> {DemoJFrame page = new DemoJFrame();});}
}

import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.GridLayout;
import java.awt.LayoutManager;
import java.awt.Panel;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Timer;
import java.util.TimerTask;import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.ButtonModel;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JTextField;public class DemoJFrame extends JFrame {private JPanel jPanel1;private JPanel jPanel2;private JPanel jPanel3;private JPanel jPanel4;private JTextField fieldname;private JComboBox comboBox;private JTextField fieldadress;private ButtonGroup bg;private JRadioButton nan;private JRadioButton nv;private JCheckBox sing;private JCheckBox dance;private JCheckBox draw;public DemoJFrame() {// 设置窗口大小this.setSize(800, 400);// 设置可见性this.setVisible(true);// 设置标题this.setTitle("Student Detail");// 设置关闭操作this.setDefaultCloseOperation(EXIT_ON_CLOSE);// 设置窗口居中WinCenter.center(this);// 创建四个面板对象jPanel1 = new JPanel();setJPanel1(jPanel1);jPanel2 = new JPanel();setJPanel2(jPanel2);jPanel3 = new JPanel();setJPanel3(jPanel3);jPanel4 = new JPanel();setJPanel4(jPanel4);// 设置容器为流式布局FlowLayout flowLayout = new FlowLayout();this.setLayout(flowLayout);// 将四个面板添加到容器中this.add(jPanel1);this.add(jPanel2);this.add(jPanel3);this.add(jPanel4);}/** 设置面板一*/private void setJPanel1(JPanel jPanel) {jPanel.setPreferredSize(new Dimension(700, 45));//设置此组件的首选大小// 给面板的布局设置为网格布局 一行4列jPanel.setLayout(new GridLayout(1, 4));JLabel name = new JLabel("Name:");name.setSize(100, 50);fieldname = new JTextField("");fieldname.setSize(80, 20);JLabel study = new JLabel("Qualification:");comboBox = new JComboBox();comboBox.addItem("Graduate");comboBox.addItem("senior");comboBox.addItem("Undergraduate");jPanel.add(name);jPanel.add(fieldname);jPanel.add(study);jPanel.add(comboBox);}/** 设置面板二*/private void setJPanel2(JPanel jPanel) {jPanel.setPreferredSize(new Dimension(700, 50));// 给面板的布局设置为网格布局 一行4列jPanel.setLayout(new GridLayout(1, 4));JLabel name = new JLabel("Address:");fieldadress = new JTextField();fieldadress.setPreferredSize(new Dimension(150, 50));JLabel study = new JLabel("Hobby:");JPanel selectBox = new JPanel();selectBox.setBorder(BorderFactory.createTitledBorder(""));selectBox.setLayout(new GridLayout(3, 1));sing = new JCheckBox("Singing");dance = new JCheckBox("Dancing");draw = new JCheckBox("Reading");selectBox.add(sing);selectBox.add(dance);selectBox.add(draw);jPanel.add(name);jPanel.add(fieldadress);jPanel.add(study);jPanel.add(selectBox);}/** 设置面板三*/private void setJPanel3(JPanel jPanel) {jPanel.setPreferredSize(new Dimension(700, 150));FlowLayout flowLayout = new FlowLayout(FlowLayout.LEFT);jPanel.setLayout(flowLayout);JLabel sex = new JLabel("Sex:");JPanel selectBox = new JPanel();selectBox.setBorder(BorderFactory.createTitledBorder(""));selectBox.setLayout(new GridLayout(2, 1));bg = new ButtonGroup();nan = new JRadioButton("Male");nv = new JRadioButton("Female");bg.add(nan);bg.add(nv);selectBox.add(nan);selectBox.add(nv);jPanel.add(sex);jPanel.add(selectBox);}/** 设置面板四*/private void setJPanel4(JPanel jPanel) {// TODO 自动生成的方法存根jPanel.setPreferredSize(new Dimension(700, 150));FlowLayout flowLayout = new FlowLayout(FlowLayout.CENTER, 50, 10);jPanel.setLayout(flowLayout);jPanel.setLayout(flowLayout);JButton sublite = new JButton("Validate");JButton reset = new JButton("Reset");sublite.addActionListener((e) -> valiData());reset.addActionListener((e) -> Reset());jPanel.add(sublite);jPanel.add(reset);}/** 提交数据*/private void valiData() {// 拿到数据String name = fieldname.getText().toString().trim();String xueli = comboBox.getSelectedItem().toString().trim();String address = fieldadress.getText().toString().trim();System.out.println(name);System.out.println(xueli);String hobbystring="";if (sing.isSelected()) {hobbystring+="Singing   ";}if (dance.isSelected()) {hobbystring+="Dancing   ";}if (draw.isSelected()) {hobbystring+="Reading  ";}System.out.println(address);if (nan.isSelected()) {System.out.println("Male");}if (nv.isSelected()) {System.out.println("Female");}System.out.println(hobbystring);}/** 重置*/private void Reset() {fieldadress.setText(null);fieldname.setText(null);comboBox.setSelectedIndex(0);sing.setSelected(false);dance.setSelected(false);draw.setSelected(false);bg.clearSelection();}
}

import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.Window;public class WinCenter {public static void center(Window win){Toolkit tkit = Toolkit.getDefaultToolkit();//获取默认工具包Dimension sSize = tkit.getScreenSize();//获取屏幕的大小Dimension wSize = win.getSize();if(wSize.height > sSize.height){wSize.height = sSize.height;}if(wSize.width > sSize.width){wSize.width = sSize.width;}win.setLocation((sSize.width - wSize.width)/ 2, (sSize.height - wSize.height)/ 2);//将组件移到新的位置
    }
}

package shiyan2;public class xiancheng
{static xian1 xian11;static xian2 xian22;        public static void main(String[] args){    xian11=new xian1();xian22=new xian2();               //用start（）方法启动线程
       xian11.start();xian22.start();}
}class xian1 extends Thread { public void run(){for(int i=1;i<=5;i++){  System.out.println( i+ "你好"+"     来自线程1");try{   sleep(200);   }catch(InterruptedException e)     //异常{ System.out.println("Lefthand error.");}    } } }class xian2 extends Thread {public void run(){for(int i=1;i<=5;i++){   System.out.println( i+ "你好"+"      来自线程2");try{   sleep(200);   }catch(InterruptedException e)//异常捕获{ System.out.println("Lefthand error.");}    }}}