stringutil.java

银行项目为后台ｓｏｃｋｅｔ通信写的程序

/****************************************************************************
 * Package		: com.ecSolutions.ecAppServer.util
 * File			: StringUtil.java
 * Create Date  : 2007-7-20
 * Author		: Steven Chen
 * 
 * Copyright(C) 2006 ecSolutions(shanghai) Co.,Limited.All Rights Reserved.
 *			
 ***************************************************************************/
package com.ecSolutions.ecAppServer.util;

public class StringUtil {
	/**
	 * 补空格
	 * @param addString
	 * @param size
	 * @return
	 */
	public static String stringFitToLength(String str, int size) {
		if(str==null){
			str="";
		}
		str=str.trim();
		int currentsize = str.length();
		if (currentsize < size) {
			StringBuffer addspace = new StringBuffer();
			for (int i = 0; i < size - currentsize; i++) {
				addspace.append(" ");
			}
			str = str + addspace.toString();
		}
		return str;
	}
	
	/**
	 * 左补0
	 * @param str
	 * @param size
	 * @return
	 */
	public static String stringAddZero(String str, int size) {
		if(str==null){
			str="";
		}		
		int currentsize = str.length();
		if (currentsize < size) {
			StringBuffer addZero = new StringBuffer();
			for (int i = 0; i < size - currentsize; i++) {
				addZero.append("0");
			}
			str = addZero.toString()+str;
		}
		return str;
	}

}