String mapping in Java

Here's one simple way. Remember strings begin at index 0;



public class StringTest{
public StringTest(){ }

public static String substitute(String str1, String str2){


StringBuffer sb = new StringBuffer();


sb.append(str1.substring(0,2));


sb.append(str2.substring(2,5));


sb.append(str1.substring(5));

return sb.toString();


}


public static void main(String []agrs){


String input1 ="123 678 8910";


String input2 ="000 111 0000 0000";


String result = StringTest.substitute(input1, input2);


System.out.println("Result: " + result);


}


}