stringutil.java

来自「这个是一个牛人写的分页标签」· Java 代码 · 共 41 行

package net.xdevelop.util;

/**
 * <p>Title: 字符串工具类</p>
 * @author from jive
 * @version 1.0
 */

public class StringUtil {
    /**
     * Replaces all instances of oldString with newString in line.
     * @param line the String to search to perform replacements on
     * @param oldString the String that should be replaced by newString
     * @param newString the String that will replace all instances of oldString
     * @return a String will all instances of oldString replaced by newString
     */
    public static final String replace( String line, String oldString, String newString )
    {
        if (line == null) {
            return null;
        }
        int i=0;
        if ( ( i=line.indexOf( oldString, i ) ) >= 0 ) {
            char [] line2 = line.toCharArray();
            char [] newString2 = newString.toCharArray();
            int oLength = oldString.length();
            StringBuffer buf = new StringBuffer(line2.length);
            buf.append(line2, 0, i).append(newString2);
            i += oLength;
            int j = i;
            while( ( i=line.indexOf( oldString, i ) ) > 0 ) {
                buf.append(line2, j, i-j).append(newString2);
                i += oLength;
                j = i;
            }
            buf.append(line2, j, line2.length - j);
            return buf.toString();
        }
        return line;
    }
}