helptools.java

Excel Report是一款基于Excel的报表生成工具

/*
 * Created on 2006-8-23
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package net.excel.report.util;

/**
 * TODO ：工具类，放一些共用函数。
 * @author juny
 */
public class HelpTools {
    /**
     * 一个仿jdk1.5 String.replace()功能的函数, 为了能在jdk1.4下运行.<br>
     * 用法示例：<br>
     * String source = "This is string abc";<br>
     * String needReplace = "abc";<br>
     * String replaceWith = "ABC";<br>
     * source = HelpTools.replace(source, needReplace, replaceWith);<br>
     * 执行后source的结果为："This is string ABC"<br>
     * @since 1.0
     * @param source	被替换的源字符串。
     * @param target	需被替换的字符串。
     * @param replaceWith	替换源字符串的新字符串
     * @return:替换后的新字符串。
     */
    public static String  replace(CharSequence source, CharSequence target,
            CharSequence replaceWith){
        if(null == target || null == replaceWith || null == source){
            throw new NullPointerException();
        }
        String strTarget = target.toString();
        String strReplaceWith = replaceWith.toString();
        StringBuffer src = new StringBuffer(source.toString());
        int pos = 0;
        pos = src.indexOf(strTarget);
        while (pos >= 0) {
            src = src.replace(pos, pos + strTarget.length(), strReplaceWith);
            pos = src.indexOf(strTarget);
        }
        return src.toString();
    }
}