Java中的旧版本中的2个案例可以使用相同的数字吗？

Question

Can I use the same number for 2 cases in a switch statement in old versions in Java?

int rand = 3;
switch(rand)
{
    case 3: System.out.print("***");
    case 3: System.out.print("###");
    default: System.out.println("&&&");
}

I am using the Java version 15.0.1 and it is not working.

Answer 1

This will not be possible as switch needs a single option for a particular input. You can either use one option like below.

int rand = 3;
switch(rand)
{
    case 3: System.out.print("***");
    default: System.out.println("&&&");
}

or concatenate both together like below

int rand = 3;
switch(rand)
{
    case 3: System.out.print("***###");
    default: System.out.println("&&&");
}