小编Hyu*_*ong的帖子

它一直给我一个错误.我对%d%n部分感到困惑.任何人都可以向我解释？我想要出现金额.谢谢

System.out.println("Thank you for choosing withdrawl.");
System.out.println("How much would u like to withdrawl?");
System.out.println("1=100");
System.out.println("2=200");
System.out.println("3=300");
System.out.println("4=400");
System.out.println("5=500");
withdrawlmoney = user.nextInt();
switch(withdrawlmoney){
    case 1:  withdrawlmoneynumber = "100";
        break;
    case 2:  withdrawlmoneynumber = "200";
        break;
    case 3:  withdrawlmoneynumber = "300";
        break;
    case 4:  withdrawlmoneynumber = "400";
        break;
    case 5:  withdrawlmoneynumber = "500";
        break;
    default: withdrawlmoneynumber = "Invalid amount";
        break;
}
System.out.println(withdrawlmoneynumber);
System.out.format("the value you want to withdrawl is: %d%n" , withdrawlmoneynumber);