Scanner scanner= new Scanner(System.in);
int x = scanner.nextInt();
把for循环里面参数范围改成你输入的x。
比如:
Scanner scanner = new Scanner(System.in);
int x = scanner.nextInt();
for (int i = 100; i <x; i++) {
int unit = i % 100 % 10; //个位
int ten = i % 100 / 10; //十位
int hundred = i / 100; //百位
if(unit*unit*unit + ten*ten*ten + hundred*hundred*hundred == i){
System.out.println(i);
}
}