Split with specials character and print string value [closed]

Question

public class SplitStringobj {
     public static void main(String[] args) {
     String val1= Start//complete//First//com//upload the dummy123//First//download; 
     String val2= First;
     String[] splitObject = outObject.split("//");
        for(String obj :splitObject) {
            if(outObject.startsWith(obj.toString());
             break;
    }
  }
}

As i need below O/P

1. List item
   String val1=Start//complete//First//com//upload the dummy123//First//download
   String val2=First
   Output=First//com//upload the dummy123//First//download

2. List item
   String val1=Start//complete//First//com//upload the dummy123//First//download
   String val2=complete
   Output=complete//First//com//upload the dummy123//First//download

3. List item
   String val1=Start//complete//First//com//upload the dummy123//First//download
   String val2=com
   Output=com//upload the dummy123//First//download

Answer 1

Here is my attempt.

public static String first_match(String[] str, String toMatch) {
    boolean match = false;
    StringBuilder output = new StringBuilder();

    for (int i=0; i<str.length; i++) {
        if (str[i].equals(toMatch)) {
            match = true;
        }
        if (match){
            output.append(str[i]);
            if (i != str.length-1) { 
                output.append("//"); 
            }
        }
    }

    return output.toString();
}

Using the above method for:

String val1 = "Start//complete//First//com//upload//First//download";
String val2 = "First";
String[] splitObject = val1.split("//");

String out = first_match(splitObject, val2);
System.out.println(out);

it gives output:

First//com//upload//First//download

EDIT:
I just realised from the comment that it could be done easier with the following:

public static String firstMatch(String str, String toMatch) {
    int index = str.indexOf(toMatch);
    if (index == -1) return "";
    return str.substring(index);
}

String out1 = firstMatch(val1, val2);

EDIT 2:
And here's another one-liner way.

val1.replaceFirst(".*?" + val2, val2)