The Java console outputs a percentage progress bar example

System.out.print("\b") will delete one character back in the console, and if you want to delete more than one character, print more than one "\b"

public static void main(String[] args) throws Exception {
    System.out.print("Progress:");
    for (int i = 1; i <= 100; i++) {
        System.out.print(i + "%");
        Thread.sleep(100);

        for (int j = 0; j <= String.valueOf(i).length(); j++) {
            System.out.print("b");
        }
    }
    System.out.println();
}