/*1.java正则表达式提取需要的字符并放入数组；
*2.ArrayList数组去重复
*
*
*
*
*
*
*
*/
package com.test.tool;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.regex.*;
public class MatchTest {
public static void main(String[] args)
{
String regex = "[0-9]{5,12}";
String input = "QQ120282458，QQ120282458 QQ125826";
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(input);
ArrayList al=new ArrayList();
while (m.find()) {
al.add(m.group(0));
}
System.out.println("去除重复值前");
for (int i=0;i<al.size();i++)
{
System.out.println(al.get(i).toString());
}
//去除重复值
HashSet hs=new HashSet(al);
al.clear();
al.addAll(hs);
System.out.println("去除重复值后");
for (int i=0;i<al.size();i++)
{
System.out.println(al.get(i).toString());
}
}
}
输出结果为：
去除重复值前
120282458
120282458
125826
去除重复值后
125826
120282458
改进版：弄成一个bean:
/*1.提取需要的字符并放入数组；
*2.ArrayList数组去重复
*
*
*
*
*
*
*
*/
package com.test.tool;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.regex.*;
public class MatchTest {
private String regex;
private String input;
private ArrayList al;
public String getRegex() {
return regex;
}
public void setRegex(String regex) {
this.regex = regex;
}
public String getInput() {
return input;
}
public void setInput(String input) {
this.input = input;
}
public ArrayList getAl() {
return al;
}
public void setAl(ArrayList al) {
this.al = al;
}
public MatchTest(String regex,String input)
{
Pattern p=Pattern.compile(regex);
Matcher m=p.matcher(input);
ArrayList myal=new ArrayList();
while (m.find())
{
myal.add(m.group());
}
HashSet hs=new HashSet(myal);
myal.clear();
myal.add(hs);
this.setRegex(regex);
this.setInput(input);
this.setAl(myal);
}
public MatchTest(){}
public static void main(String[] args){
String regex1 = "[0-9]{5,12}";
String input1="QQ120282458，QQ120282458 QQ125826";
//String input1="QQ";
MatchTest mt=new MatchTest(regex1,input1);
for (int i=0;i<mt.getAl().size();i++)
{
System.out.println(mt.getAl().get(i).toString());
}
}
}