当用户输入无效输入时如何终止程序？

这只是我代码的一部分。相同的结构适用于所有 6 个变量。（级别除外）。读入后，这会打印回计算奖金的输入。奖金应该在 10 时为 0，对于 10 以上的每个偶数累积 +1，对于 10 以下的每个奇数累积 -1。如果输入了无效输入，我该如何终止。我是否必须对所有输入使用 if 条件..

import java.util.Scanner;
 public class Game{
  public static void main(String[]args){
    Scanner sc = new Scanner(System.in);

    int bonus,x;
    double HP;

    System.out.print("Enter Str : ");
    int Str = sc.nextInt();

    System.out.print("Enter Dex : ");
    int Dex = sc.nextInt();

    System.out.print("Enter Con : ");
    int Con = sc.nextInt();

    System.out.print("Enter Int : ");
    int Int = sc.nextInt();

    System.out.print("Enter Wis : ");
    int Wis = sc.nextInt();

    System.out.print("Enter Cha : ");
    int Cha = sc.nextInt();

    System.out.print("Enter Level : ");
    int Level = sc.nextInt();

    System.out.println("\nLevel : "+Level);

    if ( Str == 10 ) {
        bonus = 0;
        System.out.println("Str : "+Str+"["+bonus+"]");
    }
        else if ( Str < 10 && Str % 2 == 0 ) {
            bonus = 0 ;
            for ( x = Str; x <= 10; x++ ) {
            if ( x % 2 != 0 ) {
                bonus = bonus + 1 ;             
            }
        }
         System.out.println("Str : "+Str+"[+"+bonus+"]");
        }
         else if ( Str < 10 && Str % 2 != 0 ) {
            bonus = 0 ;
            for ( x = Str; x <= 10; x++ ) {
            if ( x % 2 == 0 ) {
                bonus = bonus + 1 ;             
            }
        }
         System.out.println("Str : "+Str+"[-"+bonus+"]");
        }
        else if ( Str > 10 && Str % 2 == 0 ) {
            bonus = 0 ;
            for ( x = 10; x <= Str; x++ ) {
            if ( x % 2 != 0 ) {
                bonus = bonus + 1 ;             
            }
        }
         System.out.println("Str : "+Str+"[+"+bonus+"]");
        }
        else if ( Str > 10 && Str % 2 != 0 ) {
            bonus = 0 ;
            for ( x = 10; x <= Str; x++ ) {
            if ( x % 2 == 0 ) {
                bonus = bonus + 1 ;             
            }
        }
         System.out.println("Str : "+Str+"[-"+bonus+"]");
        }