import javax.swing.*;
import java.awt.*;
import java.util.Scanner;

public class T {
    public static void main(String[]args)throws Exception{
        System.out.println("请输入10个数字,以逗号分隔");
        Scanner scanner=new Scanner(System.in);
        String inputStr=scanner.nextLine();
        String[] ary=inputStr.split(",");
        int[] nums=new int[ary.length];
        for(int i=0;i<ary.length;i++){
             nums[i]=Integer.parseInt(ary[i]);
        }
        int num1Ouput=0;
        int num2Ouput=0;
        int num3Ouput=0;
        for(int i:nums){
            if(i==1){
               num1Ouput++;
            }
            if(i==2){
               num2Ouput++; 
            }
            if(i==3){
               num3Ouput++;
            }
        }
        System.out.println("1出现次数"+num1Ouput);
        System.out.println("2出现次数"+num2Ouput);
        System.out.println("3出现次数"+num3Ouput);
    }
}

------解决方案--------------------

Java code

import java.io.*;
public class test2
{
public static void main(String args[]) throws IOException
{ 
System.out.println("Please input:");
byte buffer[] = new byte[512];
int ct[]=new int[4];
int ins=System.in.read(buffer);
  for(int i=0;i<ins;i++)
  {
      int c=buffer[i]-'0';
      switch(c)
      {
          case 1:
              ct[c]++;
              break;
          case 2:
              ct[c]++;
              break;
          case 3:
              ct[c]++;
              break;
       }
  }  
  System.out.printf("1 count=%d ,2 count=%d,3 count=%d ",ct[1],ct[2],ct[3]);
}
}