HelloWorld 善戰者,求之于勢,不責于人;故能擇人而任勢。

package com.test;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class PatternTest {
 
 private static void test0() {
  String str = "<biao><>c<b>x";
  Pattern pattern;
  Matcher matcher;
  // 貪婪: 最長匹配 .* : 輸出: <biao><>c<b>
  pattern = Pattern.compile("<.*>");
  matcher = pattern.matcher(str);
  while (matcher.find()) {
  System.out.println(matcher.group());
  }
  // 不知是否非貪婪 .*? : 輸出: <biao>, <>, <b>
  pattern = Pattern.compile("<.*?>");
  matcher = pattern.matcher(str);
  while (matcher.find()) {
  System.out.println(matcher.group());
  }
  // 使用組, 輸出<>里的內容, 輸出: 'biao', ' ', 'b'
  // 0組代表整個表達式, 子組從1開始
  pattern = Pattern.compile("<(.*?)>");
  matcher = pattern.matcher(str);
  while (matcher.find()) {
  System.out.println(">>"+matcher.group(1));
  }
 }
 
 /** 查找以Java開頭的任意字符串 */
 public static void test1() {
  Pattern pattern = Pattern.compile("^Java.*");
  Matcher m = pattern.matcher("Java哈哈");
  System.out.println(m.find());
 }
 
 /** 以多條件分割字符串 */
 public static void test2() {
  Pattern pattern = Pattern.compile("[,|\\+]+");
  String str[] = pattern.split("Java+ Hello World  Java,Hello,,World|Sun");
  if(str != null) {
   for(String s : str) {
    System.out.println(">> " +s);
   }
  }
 }

 /** 文字替換 */
 public static void test3() {
  Pattern pattern = Pattern.compile("abc*");
  Matcher matcher = pattern.matcher("xabcccc測試abd, abcce");
  String str = matcher.replaceAll("(?)");
  System.out.println(str);
 }
 
 /** 文字替換(替換字符)  結果將會是  x(?)測試(?)d, (?) */
 public static void test4() {
  Pattern pattern = Pattern.compile("123|4(567)");
  Matcher matcher = pattern.matcher("0123456789abcde");
  StringBuffer sb = new StringBuffer();
  while(matcher.find()) {
   System.out.println(matcher.group(0));
   System.out.println(matcher.group(1));
   System.out.println(">>"+ matcher.start()+":"+matcher.end());
   matcher.appendReplacement(sb, "(?)");
  }
  matcher.appendTail(sb);
  System.out.println(sb);
 }
 
 public static void test5() {
  String regEx="B(ond)";
       
        String str="My name is Bond. James Bond.";
        
        Pattern p=Pattern.compile(regEx);
        
        Matcher matcher=p.matcher(str);
        
        if(matcher.find()){
            System.out.println(matcher.groupCount());
            System.out.println(matcher.start());
            String group_0 = matcher.group(0);
            String group_1 = matcher.group(1);
            System.out.println("Group 0 " + group_0);
            System.out.println("Group 1 " + group_1);
            System.out.println(str);
        }

 }
 
 // 驗證是否為郵箱地址
 public static void test6() {
  String str="ponline@yahoo.com.cn.jcWe--_*";
  Pattern pattern =
  Pattern.compile("[\\w\\.\\-]+@([\\w\\-]+\\.)+[\\w\\-]+");
  Matcher matcher = pattern.matcher(str);
  System.out.println(matcher.matches());
 }
 
 /** 去除html 標記  */
 public static void test7() {
  Pattern pattern = Pattern.compile(".+?");
  Matcher matcher = pattern.matcher("<a 測試 href=\"index.html\">主頁</a>");
  matcher.find();
  System.out.println(matcher.group());
  String string = matcher.replaceFirst("");
  System.out.println(string);
 }
 
 /** 查找html 中對應條件字符串 **/
 public static void test8() {
  Pattern pattern = Pattern.compile("href=\"(.+?)\"");
  Matcher matcher = pattern.matcher("<a href=\"index.html\">主頁</a>");
  if(matcher.find())
    System.out.println(matcher.group(1));
 }
 /** 截取http://地址  **/
 public static void test9() {
  Pattern pattern = Pattern.compile("(http://|https://){1}.+");
  Matcher matcher = pattern.matcher("dsdsds<http://dfhf.\\sd-: s//國家gfg-ffdfd>fdf");
  StringBuffer buffer = new StringBuffer();
  while(matcher.find()){              
      buffer.append(matcher.group());        
      buffer.append("\r\n"); 
      System.out.println(buffer.toString());
  }
 }
 
 /** 替換指定{}中文字  **/
 public static void test10() {
  String str = "Java目前的發展史是由{0}年-{1}年";
  String[][] object={new String[]{"\\{0\\}","1995"},new String[]{"\\{1\\}","2007"}};
  System.out.println(replace(str,object));
 }
 
 public static String replace(String sourceString, String[][] object) {
  String temp=sourceString;    
        for(int i=0;i<object.length;i++){
           String[] result=(String[])object[i];
           Pattern    pattern = Pattern.compile(result[0]);
           Matcher matcher = pattern.matcher(temp);
           temp=matcher.replaceAll(result[1]);
        }
        return temp;
 }
 
 public static void main(String[] args) throws Exception{
  PatternTest.test10();
 

 }
}

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