五子棋是一款传统的棋类游戏，它通常使用一种称为“搜索树”的方法来判断每一步下棋的最优选择。在Java中，您可以使用多线程技术来并行处理搜索树的不同部分，以提高性能和减少延迟。通常，您可以使用Java的Thread类来创建和管理多线程，并使用多线程技术来提高您的五子棋程序的性能。

直接上程序吧：

//wuziqi.java

import java.applet.Applet

import java.awt.Button

import java.awt.Checkbox

import java.awt.CheckboxGroup

import java.awt.Color

import java.awt.Graphics

import java.awt.Label

import java.awt.event.ActionEvent

import java.awt.event.ActionListener

import java.awt.event.ItemEvent

import java.awt.event.ItemListener

import java.awt.event.MouseEvent

import java.awt.event.MouseListener

import java.awt.event.MouseMotionListener

@SuppressWarnings("serial")

public class wuziqi extends Applet implements ActionListener,MouseListener,MouseMotionListener,ItemListener

{

int color_Qizi=0//旗子的颜色标识 0:白子 1:黑子

int intGame_Start=0//游戏开始标志 0未开始 1游戏中

int intGame_Body[][]=new int[16][16]//设置棋盘棋子状态 0 无子 1 白子 2 黑子

Button b1=new Button("游戏开始")

Button b2=new Button("重置游戏")

Label lblWin=new Label(" ")

Checkbox ckbHB[]=new Checkbox[2]

CheckboxGroup ckgHB=new CheckboxGroup()

public void init()

{

setLayout(null)

addMouseListener(this)

add(b1)

b1.setBounds(330,50,80,30)

b1.addActionListener(this)

add(b2)

b2.setBounds(330,90,80,30)

b2.addActionListener(this)

ckbHB[0]=new Checkbox("白子先",ckgHB,false)

ckbHB[0].setBounds(320,20,60,30)

ckbHB[1]=new Checkbox("黑子先",ckgHB,false)

ckbHB[1].setBounds(380,20,60,30)

add(ckbHB[0])

add(ckbHB[1])

ckbHB[0].addItemListener(this)

ckbHB[1].addItemListener(this)

add(lblWin)

lblWin.setBounds(330,130,80,30)

Game_start_csh()

}

public void itemStateChanged(ItemEvent e)

{

if (ckbHB[0].getState()) //选择黑子先还是白子先

{

color_Qizi=0

}

else

{

color_Qizi=1

}

}

public void actionPerformed(ActionEvent e)

{

@SuppressWarnings("unused")

Graphics g=getGraphics()

if (e.getSource()==b1)

{

Game_start()

}

else

{

Game_re()

}

}

public void mousePressed(MouseEvent e){}

@SuppressWarnings("unused")

public void mouseClicked(MouseEvent e)

{

Graphics g=getGraphics()

int x1,y1

x1=e.getX()

y1=e.getY()

if (e.getX()<20 || e.getX()>300 || e.getY()<20 || e.getY()>300)

{

return

}

if (x1%20>10)

{

x1+=20

}

if(y1%20>10)

{

y1+=20

}

x1=x1/20*20

y1=y1/20*20

set_Qizi(x1,y1)

}

public void mouseEntered(MouseEvent e){}

public void mouseExited(MouseEvent e){}

public void mouseReleased(MouseEvent e){}

public void mouseDragged(MouseEvent e){}

public void mouseMoved(MouseEvent e){}

public void paint(Graphics g)

{

draw_qipan(g)

}

public void set_Qizi(int x,int y) //落子

{

if (intGame_Start==0) //判断游戏未开始

{

return

}

if (intGame_Body[x/20][y/20]!=0)

{

return

}

Graphics g=getGraphics()

if (color_Qizi==1)//判断黑子还是白子

{

g.setColor(Color.black)

color_Qizi=0

}

else

{

g.setColor(Color.white)

color_Qizi=1

}

g.fillOval(x-10,y-10,20,20)

intGame_Body[x/20][y/20]=color_Qizi+1

if (Game_win_1(x/20,y/20)) //判断输赢

{

lblWin.setText(Get_qizi_color(color_Qizi)+"赢了!")

intGame_Start=0

}

if (Game_win_2(x/20,y/20)) //判断输赢

{

lblWin.setText(Get_qizi_color(color_Qizi)+"赢了!")

intGame_Start=0

}

if (Game_win_3(x/20,y/20)) //判断输赢

{

lblWin.setText(Get_qizi_color(color_Qizi)+"赢了!")

intGame_Start=0

}

if (Game_win_4(x/20,y/20)) //判断输赢

{

lblWin.setText(Get_qizi_color(color_Qizi)+"赢了!")

intGame_Start=0

}

}

public String Get_qizi_color(int x)

{

if (x==0)

{

return "黑子"

}

else

{

return "白子"

}

}

public void draw_qipan(Graphics G) //画棋盘 15*15

{

G.setColor(Color.lightGray)

G.fill3DRect(10,10,300,300,true)

G.setColor(Color.black)

for(int i=1i<16i++)

{

G.drawLine(20,20*i,300,20*i)

G.drawLine(20*i,20,20*i,300)

}

}

public void Game_start() //游戏开始

{

intGame_Start=1

Game_btn_enable(false)

b2.setEnabled(true)

}

public void Game_start_csh() //游戏开始初始化

{

intGame_Start=0

Game_btn_enable(true)

b2.setEnabled(false)

ckbHB[0].setState(true)

for (int i=0i<16 i++ )

{

for (int j=0j<16 j++ )

{

intGame_Body[i][j]=0

}

}

lblWin.setText("")

}

public void Game_re() //游戏重新开始

{

repaint()

Game_start_csh()

}

public void Game_btn_enable(boolean e) //设置组件状态

{

b1.setEnabled(e)

b2.setEnabled(e)

ckbHB[0].setEnabled(e)

ckbHB[1].setEnabled(e)

}

public boolean Game_win_1(int x,int y) //判断输赢 横

{

int x1,y1,t=1

x1=x

y1=y

for (int i=1i<5 i++ )

{

if (x1>15)

{

break

}

if (intGame_Body[x1+i][y1]==intGame_Body[x][y])

{

t+=1

}

else

{

break

}

}

for (int i=1i<5 i++ )

{

if (x1<1)

{

break

}

if(intGame_Body[x1-i][y1]==intGame_Body[x][y])

{

t+=1

}

else

{

break

}

}

if (t>4)

{

return true

}

else

{

return false

}

}

public boolean Game_win_2(int x,int y) //判断输赢 竖

{

int x1,y1,t=1

x1=x

y1=y

for (int i=1i<5 i++ )

{

if (x1>15)

{

break

}

if (intGame_Body[x1][y1+i]==intGame_Body[x][y])

{

t+=1

}

else

{

break

}

}

for (int i=1i<5 i++ )

{

if (x1<1)

{

break

}

if(intGame_Body[x1][y1-i]==intGame_Body[x][y])

{

t+=1

}

else

{

break

}

}

if (t>4)

{

return true

}

else

{

return false

}

}

public boolean Game_win_3(int x,int y) //判断输赢 左斜

{

int x1,y1,t=1

x1=x

y1=y

for (int i=1i<5 i++ )

{

if (x1>15)

{

break

}

if (intGame_Body[x1+i][y1-i]==intGame_Body[x][y])

{

t+=1

}

else

{

break

}

}

for (int i=1i<5 i++ )

{

if (x1<1)

{

break

}

if(intGame_Body[x1-i][y1+i]==intGame_Body[x][y])

{

t+=1

}

else

{

break

}

}

if (t>4)

{

return true

}

else

{

return false

}

}

public boolean Game_win_4(int x,int y) //判断输赢 左斜

{

int x1,y1,t=1

x1=x

y1=y

for (int i=1i<5 i++ )

{

if (x1>15)

{

break

}

if (intGame_Body[x1+i][y1+i]==intGame_Body[x][y])

{

t+=1

}

else

{

break

}

}

for (int i=1i<5 i++ )

{

if (x1<1)

{

break

}

if(intGame_Body[x1-i][y1-i]==intGame_Body[x][y])

{

t+=1

}

else

{

break

}

}

if (t>4)

{

return true

}

else

{

return false

}

}

}

---