Effective Java ѧϰ±Ê¼Ç (6)
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ÈçÓÐÒ»¸östack, Æäpopº¯ÊýÈçÏÂ.
public Object pop()
{
if( Element.length() == 0) return null;
return Element[size—];
}
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public Object pop()
{
if( Element.length() == 0) return null;
Object ele = Element[—size];
Element[size] =null;
return ele;
}
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ʹÓüòµ¥µÄThread.sleep¼¼ÊõʵÏÖ¶¨Ê±
package test.thread;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
im ......
package com.yzy;
import java.util.regex.*;
public class Test {
/**
* @param args
*/
public static void main(String[] args) {
Pattern p=Pattern.compile("^[a-z]+");
Matcher m=p.matcher("a233"); //true
//Matcher m=p.matcher("2233") ......
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