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();
 }