Why my computer beeps while using String(char[]ch) code?

Question

I am using JCreator,it compiles fine but beeps while running the code

class StringDemo {

public static void main(String[]args){

    char[]arr={7};

    String s1= new String(arr);
    System.out.println(s1); //prints nothing

  }
}

Answer 1

Ascii/Unicode character 7 is the 'bell' code . As such, when you print it, the console is configured to generate a sound.