轻松做：
Scanner keyboard = new Scanner(System.in);int startr, endr;boolean good = false;do{ System.out.println("Enter the Starting Number of the Range: "); startr = keyboard.nextInt(); if(startr % 10 == 0 && startr >= 0) good = true; else System.out.println("Numbers is not divisible by 10");}while (!good);good = false;do{ System.out.println("Enter the Ending Number of the Range: "); endr = keyboard.nextInt(); if(endr % 10 == 0 && endr <= 1000) good = true; else System.out.println("Numbers is not divisible by 10");}while (!good);// do stuff
