效果

代码

思路：使用NumberFormat类来格式化数字，显示完后，退格覆盖重新显示新的数字

import java.text.NumberFormat;public class Test {public static void main(String[] args) throws Exception {System.out.print("Progress:");NumberFormat num = NumberFormat.getPercentInstance();num.setMaximumIntegerDigits(4);num.setMaximumFractionDigits(3);for (int i = 1; i <= 13; i++) {double percent = i/13.0;String temp = num.format(percent);System.out.print(temp);Thread.sleep(1000);// 退格if (i!=13) {for (int j = 0; j < temp.length(); j++) {System.out.print("\b");}}}System.out.println();}
}