Question

线程中开启3个子线程,分别实现打印字符串(1)"A","B", "C" (2)"AA","BB","CC"(3)"ABC"-->"CBA"-->"BAC"

是一次执行，三个问题全部实现

Answer 1

public class Demo {
    //(1) "A"，"B", "C"  (2) "AA","BB","CC" (3) "ABC"-->"CBA"-->"BAC"
    public static void main(String[] args)throws Exception{
       String str = "ABC";
       getThread(str);
       String[] arr1 = {"AA","BB","CC"};
       getThread(arr1);
       String[] arr2 = {"ABC","CBA","BAC"};
       getThread(arr2);
    }
    private static<T> void getThread(T t) throws InterruptedException{
        Thread thread = new Thread(){
            public synchronized void run(){
                if(t.getClass() == String.class){
                    for(int i = 0; i < t.toString().length(); i++){
                        System.out.print(t.toString().charAt(i)+" ");
                    }
                }else if(t.getClass() == String[].class){
                    String[] arr = (String[]) t;
                    for(int i = 0; i < arr.length; i++){
                        System.out.print(arr[i]+" ");
                    }
                }
            }
        };
        thread.start();
        thread.join();
        System.out.println();
    }
}

Answer 2

不怎么明白你的意思，你能说的在具体一点吗？

追问

用java编写
一个线程中开启3个子线程，然后实现打印出
(1)"A","B", "C"
(2)"AA","BB","CC"
(3)"ABC"-->"CBA"-->"BAC"
这是三个问题，但是要一次调用main实现

追答

比如说你的A,B,C是需要用三个线程分别打印知道字符吗？打印顺序有要求吗？