[FIXED] Java repeat String with str.repeat

Issue

I have a problem with a fairly simple question in Java. To repeat a string, you can use str.repeat from Java 11. However I have the following error:

Exception in thread "main" java.lang.Error: Unresolved compilation problem: 
The method repeat(int) is undefined for the type String

The code is as follows:

String rep = "-";
rep = rep.repeat(4);
System.out.println(rep);

With a command-line compilation, no problem, but Eclipse is problematic, it uses

java-11-openjdk-amd64

Thanks for your help

Solution

repeat is Java 11 keyword. You are trying to use repeat from a lower version than Java 11.

modify the code with for loop as below.

 String rep = "";
 for(int i=0;i<4;i++) {
    rep += "-";
 }
 System.out.println(rep);

Answered By - Gayan Chinthaka