How to simply and efficiently repeat a string in Java?

Hi everyone! I'm a beginner Java developer and I have a problem. I need to repeat the same string multiple times, for example, the character '-' 10 times to draw a separator line in the console. Or, say, repeat the word "Hello" 5 times to get "HelloHelloHelloHelloHello". I know that I can do it manually using a loop: ```java String str = "Hello"; String result = ""; for (int i = 0; i < 5; i++) { result += str; } System.out.println(result); // HelloHelloHelloHelloHello ``` But this looks cumbersome and ugly. Moreover, I've heard that string concatenation in a loop using `+=` is bad practice because a new String object is created each time. For large repetitions, this will be slow. I tried using `StringBuilder`, but the code