语源科技BlogJava-波波的java之路

对数组的操作一个成绩统计

姜波 — Sat, 23 Aug 2008 16:16:00 GMT

摘要: 1import java.util.Scanner; 2 3public class StuManager { 4 5 /** *//** 6 *&... 阅读全文

姜波 2008-08-24 00:16 发表评论

一个五子棋的小程序

姜波 — Sat, 23 Aug 2008 02:34:00 GMT

写了一半现在只能下棋还不能判断

package day04;
import java.util.Scanner;
public class FiveChess {
public static void main(String[] args) {
  char[][] state=new char[14][14];
  for(int i=0;i<state.length;i++){
   for(int j=0;j<state[i].length;j++){
    state[i][j]='*';
   }
  }
  boolean isBlack=true;//当前是黑方下子
  Scanner sca=new Scanner(System.in);
  printState(state);
  while(true){
   System.out.println("请"+(isBlack?"黑":"白")+"方下子:");
   String input=sca.next();
   if(input.equals("exit")){
    break;
   }
   int x=input.charAt(0)-'a';
   int y=input.charAt(1)-'a';
   if(state[x][y]=='@' || state[x][y]=='O'){//该位置已经有棋子了
    System.out.println("该位置已经有棋子,请重新指定坐标!");
    continue;
   }
   state[x][y]=(isBlack?'@':'O');
   printState(state);
   if(isWin(state,isBlack,x,y)){
    System.out.println((isBlack?"黑":"白")+"方获胜!");
    break;
   }
   isBlack=!isBlack;
  }
}

public static void printState(char[][] state){
  for(int i=0;i<state.length;i++){//输出每一行的内容
   System.out.print((char)('a'+i)+"   ");//输出行坐标（左边的字母）
   for(int j=0;j<state[i].length;j++){//输出该行的内容
    System.out.print(state[i][j]+"  ");
   }
   System.out.print("\n");//输出换行符
  }

  System.out.print("    ");//输出第一行开头的空格
  for(int i=0;i<state[0].length;i++){//输出第一行的所有字母
   System.out.print((char)('a'+i)+"  ");
  }
  System.out.print("\n");//输出换行符
}

public static boolean isWin(char[][] state,boolean isBlack,int x,int y){
  //char c=isBlack?'@':'O';
  return isShuipingWin(state,isBlack,x,y) || isChuizhiWin(state,isBlack,x,y) ||
  isZuoXieWin(state,isBlack,x,y) || isYouXieWin(state,isBlack,x,y);
}

public static boolean isShuipingWin(char[][] state,boolean isBlack,int x,int y){
  //?????
  return false;
}

    public static boolean isChuizhiWin(char[][] state,boolean isBlack,int x,int y){
  //?????
     return false;
}

    public static boolean isZuoXieWin(char[][] state,boolean isBlack,int x,int y){
  //??????
     return false;
}

    public static boolean isYouXieWin(char[][] state,boolean isBlack,int x,int y){
     //??????
     return false;
    }

}

姜波 2008-08-23 10:34 发表评论

关系和逻辑运算符

姜波 — Fri, 28 Mar 2008 13:52:00 GMT

import java.util.*;
public class Bool
{
public static void main(String args[])
{
  Random rand= new Random ();
  int i=rand.nextInt()%100;
  int j=rand.nextInt()%100;
  System.out.println("i="+i);
  System.out.println("j="+j);
  System.out.println("i>j is "+(i>j));
  System.out.println("i   System.out.println("i>=j is "+(i>=j));
  System.out.println("i<=j is "+(i<=j));
  System.out.println("i==j is "+(i==j));
  System.out.println("i!=j is "+(i!=j));
  System.out.println("(i<10)&&(j<10) is "+((i<10)&&(j<10)));
  System.out.println("(i>10)||(j>10) is "+((i>10)||(j>10)));
      }
}

姜波 2008-03-28 21:52 发表评论

关系运算符的使用

姜波 — Fri, 28 Mar 2008 13:52:00 GMT

public class guanxi
{
public static void main (String args[])
{
  float a=10.0f;
  double b=10.0;
  if(a==b)
  {
   System.out.println("a和b相等");

  }
  else
                  {
                     System.out.println("a和b不相等");
                  }
}
}

姜波 2008-03-28 21:52 发表评论

递增递减的使用

姜波 — Fri, 28 Mar 2008 13:51:00 GMT

public class autoinc
{
public static void main (String[] args){
  int i= 1;
     System.out.println("i:"+i);
  System.out.println("++i:"+ ++i);
  System.out.println("i++:"+ i++);
  System.out.println("i:"+i);
  System.out.println("--i:"+ --i);
  System.out.println("i--:"+ i--);
  System.out.println("i:"+i);
}

}

姜波 2008-03-28 21:51 发表评论

SimpleTypes and suanshu

姜波 — Tue, 25 Mar 2008 14:19:00 GMT

public class SimpleTypes {
public static void main (String args [])
    {
    byte b=0x55;
    short s=0x55ff;
    int i=1000000;
        char c='c';
    float f=0.23f;
    double d=0.7E-3;
    boolean bool=true;
    System.out.println("b="+b);
    System.out.println("s="+s);
    System.out.println("i="+i);
    System.out.println("c="+c);
    System.out.println("f="+f);
    System.out.println("d="+d);
    System.out.println("bool="+bool);
        }
}

    /**
    * @算术运算符的运算
    */
public class suanshu{
   public static void main (String args[])
   {
       int a=5+4;
       int b=a*2;
       int c=b/4;
       int d=b-c;
       int e=-d;
       int f=e%4;
       double g=18.4;
       double h=g%4;
       int i=3;
       int j=i++;
       int k=++i;
           System.out.println("a="+a);
           System.out.println("b="+b);
           System.out.println("c="+c);
           System.out.println("d="+d);
           System.out.println("e="+e);
           System.out.println("f="+f);
           System.out.println("g="+g);
           System.out.println("h="+h);
           System.out.println("i="+i);
           System.out.println("j="+j);
           System.out.println("k="+k);

   }
}

姜波 2008-03-25 22:19 发表评论

TestBean

姜波 — Sat, 22 Mar 2008 02:50:00 GMT

<%@ page import="test.TestBean"%>

<% TestBean testBean=new TestBean("This is a test java bean.");%>
java bean name is ;
<%=testBean.getName() %>

package test;
public class TestBean{
private String name=null;
public TestBean(String strName_p){
  this.name=strName_p;
}
public void setName(String strName_p){
  this.name=strName_p;
}
public String getName(){
  return this.name;
}
}

姜波 2008-03-22 10:50 发表评论

runbat

姜波 — Sat, 22 Mar 2008 02:02:00 GMT

set path=%java_Home%\bin
set classpath=jar包的路径;jar包的路径
javac *.java
pause

package test;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
pulic class Test extends HttpServlet{
protected void doGet(HttpServletRequest request, HttpServletResponse response)
  throws ServletException,IOException{
           PrintWriter out=response.getWriter();
     out.println("

This is a servlet test.

");
out.flush();
}
}

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee

http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">

A application for test

Test
Test

A test for servlet.

test.Test

Test
/Test

\myapp\WEB-INF\classes\test

姜波 2008-03-22 10:02 发表评论

常用的网址

姜波 — Sat, 22 Mar 2008 00:54:00 GMT

http://www.eclipse.org
http://www.apache.org

姜波 2008-03-22 08:54 发表评论

今天很高兴

姜波 — Fri, 21 Mar 2008 12:07:00 GMT

宿舍新安装上宽带，闲暇时上网，无意中找到了高中时代的同桌一鸣。日子过的好快，还记得高一的时候我们两个人早上起来一起学习英语的事情……………………

姜波 2008-03-21 20:07 发表评论