我想在开关内部做一个开关。我编译了它,但唯一的是,每次运行它时,我都会为第一个开关选择其中一个,然后一旦选择其中一个开关内部的第一个开关,然后也要求我为第一个开关内的第二个开关选择一个外壳,然后第三个和第四个开关,然后结束。如何在选择开关内部的第一个开关后重新开始整个程序,或者结束程序。谢谢。如何结束交换机内部的交换机。 Java
ex。
System.out.println("Pick a color.\n");
System.out.println(" 1. Red");
System.out.println(" 2. Blue");
System.out.println(" 3. Yellow");
System.out.println(" 4. Green");
Scanner kbReader = new Scanner(System.in);
int color = kbReader.nextInt();
System.out.println("The color you chose was " + color + ".");
String s1 = kbReader.nextLine();
switch (color)
{
case 1: //Red
System.out.println("Now enter an integer from 1 through 10.");
int num1 = kbReader.nextInt();
switch (num1)
{
case 1:
case 3:
case 5:
case 7:
case 9:
System.out.println("");
case 2:
case 4:
case 6:
case 8:
case 10:
System.out.println("");
break;
}
case 2: //Blue
System.out.println("Now enter an integer from 1 through 10.");
int num2 = kbReader.nextInt();
switch (num2)
{
case 1:
case 3:
case 5:
case 7:
case 9:
System.out.println("");
case 2:
case 4:
case 6:
case 8:
case 10:
System.out.println("");
}
case 3: //Yellow
System.out.println("Now enter an integer from 1 through 10.");
int num3 = kbReader.nextInt();
switch (num3)
{
case 1:
case 3:
case 5:
case 7:
case 9:
System.out.println("");
case 2:
case 4:
case 6:
case 8:
case 10:
System.out.println("");
}
case 4: //Green
System.out.println("Now enter an integer from 1 through 10.");
int num4 = kbReader.nextInt();
switch (num4)
{
case 1:
case 3:
case 5:
case 7:
case 9:
System.out.println("");
case 2:
case 4:
case 6:
case 8:
case 10:
System.out.println("");
}
}
}
我会尝试把更多的休息;在每个案例之后的陈述,所以你打破当前的开关。此外,我会重构你的代码,所以你有1个开关在主(颜色),然后根据这种情况,调用另一个方法来获得你的整数输入,所以你不嵌套开关语句。 –