Java删除字符串相邻的字符 java删除字符串中相同字符

package com.risen.oa.util;

import java.util.LinkedHashSet;
import java.util.Set;

public class StringHelper {
        //移除相同字符
    public static String removeSameString(String str) {  
        Set<String> mLinkedSet = new LinkedHashSet<String>();  
        String[] strArray = str.split(",");  
        StringBuffer sb = new StringBuffer();  
        for (int i = 0; i < strArray.length; i++) {  
            if (!mLinkedSet.contains(strArray[i])) {  
                mLinkedSet.add(strArray[i]);  
                sb.append(strArray[i] + ",");  
            }  
        }  
        if (sb.length() > 0) {
            return sb.toString().substring(0, sb.toString().length() - 1); 
        } else {
            return "";
        }
    } 
        //移除指定字符
    public static String removeTargetString(String src,String reg) {
        if (src.contains(",")) {
            String[] srcs = src.split(",");
            StringBuffer sb = new StringBuffer();  
            for (String name : srcs) {
                if ("" != name) {
                    if (!name.equals(reg)) {
                        sb.append(name + ",");
                    }
                }
            }
            if (sb.length() > 0) {
                return sb.toString().substring(0, sb.toString().length() - 1); 
            } else {
                return "";
            }
        } else {
            return "";
        }
        
    }
}
    //