Write code to replace a string using while loop - Java java.lang

Java examples for java.lang:String Replace

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Description

Write code to replace a string using while loop

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) {
        String source = "java2s.com";
        String subject = "java2s.com";
        String object = "java2s.com";
        System.out.println(replace(source, subject, object));
    }/*from   ww  w  .ja va2 s . co m*/

    public static String replace(String source, String subject,
            String object) {
        StringBuffer rtnStr = new StringBuffer();
        String preStr = "";
        String nextStr = source;
        String srcStr = source;

        while (srcStr.indexOf(subject) >= 0) {
            preStr = srcStr.substring(0, srcStr.indexOf(subject));
            nextStr = srcStr.substring(
                    srcStr.indexOf(subject) + subject.length(),
                    srcStr.length());
            srcStr = nextStr;
            rtnStr.append(preStr).append(object);
        }
        rtnStr.append(nextStr);
        return rtnStr.toString();
    }
}

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