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1.Simple Factory
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СÆóÒµ£ºÉú²úµçÄÔÓ²¼þCPU£¬ÈçCPUa,CPUb,CPUc·Ö±ð´ú±íÈý¸öÖÖÀàµÄCPU
 
public abstract class CPU{
 
}
public class CPUa extends CPU{
public void getInfo() {
System.out.println("CPUa");
}

 
public class CPUb extends CPU{
public void getInfo() {
System.out.println("CPUb");
}

 
public class CPUc extends CPU{
public void getInfo() {
System.out.println("CPUc");
}

 
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Public class CPUFactory {
Public static CPU produceCPU(Type t){   //Ò»°ãÖ»ÓÃÓÚ·µ»ØÐ¶ÔÏó£¬ËùÒÔÒ»°ã·½·¨Îªstatic£¬±ãÓÚʹÓã¬Ìá¸ßЧÂÊ
If(t==a)
Return new CPUa();
If(t==b)
Return new CUPb();
If(t==c)
Rerurn new CPUc();
}
}
 
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package com.pic;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.awt.image.*;
import org.w3c.dom.*;
import com.sun.image.codec.jpeg.*;
import javax.imageio.*;
public class ImgBean_i{
public void ImgBean_i(){
}
public void ImgYin(S ......

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1 SimpleDateFormatµ£µ±ÖØÈÎ,ÔõÑù¸ñʽ»¯¶¼ÐÐ
import java.util.Date;
import java.text.SimpleDateFormat;
public class Demo
{
public static void main(String[] args)
{
Date now=new Date();
SimpleDateFormat f=newSimpleDateFormat("½ñÌìÊÇ"+"yyyyÄêMMÔÂddÈÕ E kkµãmm·Ö");
System.out.println(f.fo ......

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[Java] doubleÓëStringÖ®¼äµÄÏ໥ת»»·½·¨

8ÖÖ»ù±¾Êý¾ÝÀàÐÍÓÐÏàÓ¦µÄ8ÖÖ°ü×°Àà(Wrapper)¶ÔÓ¦,·Ö±ðÊÇ:Character,Byte,Short,Integer,Long,Float,Double,Boolean.
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1.ÌṩÁËvalueOf(String)ÓÃÓÚ´Ó×Ö·û´®×ª»»¼°toString()ת»»³É×Ö·û´®
2.ͨ¹ýxxxxValue()·½·¨¿ÉÒԵõ½Ëù°ü×°µÄÖµ,ÈçInteger¶ÔÏóµÄintValue()·½·¨.
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public class DoubleAndString {
pu ......
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