java控制台输出百分比进度条示例

system.out.print("\b") 会在控制台下往回删掉一个字符，如果你想回删多个字符就打印多个 "\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();
}