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    public class Sum

    {
      public static void main(String[] args)

      {
        System.out.println("5+5="+5+5);
      }

    }

    public class Increment
    {
      public static void main(String[] args)
      {
        int a=3,b;
        b=a++;
        System.out.println("a="+a+",b="+b);
      }
    }

    public class Short
    {
      public static void main(String[] args)
      {
        short s=3;
        s+=4;
        System.out.println("s="+s);
      }
    }

    public class Count
    {
      public static void main(String[] args)
      {
        System.out.println(6&3);
        System.out.println(6|3);
        System.out.println(6^3);
        System.out.println(6<<3);
        System.out.println(3<<2);
        System.out.println(3>>1);
      }
    }

    public class Countc
    {
      public static void main(String[] args)
      {
        int x=0,y;
        y=x>1?100:200;
        System.out.println("y="+y);
      }

    }

    import java.util.Scanner;
    public class ComeputeA
    {
      public static void main(String[] args)
      {
        Scanner input=new Scanner(System.in);
        System.out.print("输入两个数:");
        int a=input.nextInt();
        int b=input.nextInt();
        a=a>b?a:b;
        System.out.println(a);
      }
    }

    import java.util.Scanner;
    public class ComeputeB
    {
      public static void main(String[] args)
      {
        Scanner input=new Scanner(System.in);
        System.out.print("输入三个数:");
        int a=input.nextInt();
        int b=input.nextInt();
        int c=input.nextInt();
        a=a>b?a:b;
        c=a>c?a:c;
        System.out.println(c);
      }
    }

    import java.util.Scanner;
    public class WeekDay
    {
      public static void main(String[] args)
      {
        Scanner input=new Scanner(System.in);
        System.out.print("请输入一个一到七之间的数:");
        int weekday=input.nextInt();
        if(weekday==1)
        System.out.println("今天星期一");
        if(weekday==2)
        System.out.println("今天星期二");
        if(weekday==3)
        System.out.println("今天星期三");
        if(weekday==4)
        System.out.println("今天星期四");
        if(weekday==5)
        System.out.println("今天星期五");
        if(weekday==6)
        System.out.println("今天星期六");
        if(weekday==7)
        System.out.println("今天星期日");
      }
    }

    import java.util.Scanner;
    public class SeasonA
    {
      public static void main(String[] args)
      {
        Scanner input=new Scanner(System.in);
        System.out.println("请输入一个数:");
        int a=input.nextInt();
        switch(a)
        {
          case 1:
          case 2:
            System.out.println("冬天来了!");
            break;
          case 3:
          case 4:
          case 5:
            System.out.println("春天来了!");
            break;
          case 6:
          case 7:
          case 8:
            System.out.println("夏天来了!");
            break;
          case 9:
          case 10:
          case 11:
            System.out.println("秋天来了!");
            break;
          case 12:
            default:
            System.out.println("出错!");
          }
      }
    }

     import java.util.Scanner;
    public class Season
    {
      public static void main(String[] args)
      {
        Scanner input=new Scanner(System.in);
        System.out.print("输入一个月份:");
        int a=input.nextInt();
        if(a>=3&&a<=5)
          System.out.println("春天来了!");
        if(a>=6&&a<=8)
          System.out.println("夏天来了!");
        if(a>=9&&a<=11)
          System.out.println("秋天来了!");
        if(a>=12&&a<=2)
          System.out.println("冬天来了!");
      }
    }

    import java.util.Scanner;
    public class Symbol
    {
      public static void main(String[] args)
      {
        Scanner input=new Scanner(System.in);
        System.out.println("请输入两个数:");
        int a=input.nextInt();
        int b=input.nextInt();
        char option='%';
        switch(option)
        {
          case '+':
            System.out.println("a+b="+(a+b));
            break;
          case '-':
            System.out.println("a-b="+(a-b));
            break;
          case '*':
            System.out.println("a*b="+(a*b));
            break;
          case '/':
            System.out.println("a/b="+(a/b));
            break;
          case '%':
            System.out.println("a%b="+(a%b));
            break;
            default:
            System.out.println("出错!");
        }
      }
    }

    public class Excise
    {
    public static void main(String[] args)
      {
        int x=1;
        do
         {
          System.out.println("x="+x);
          x++;
          }while(x<1);
      }

    public class ExciseA
    {
      public static void main(String[] args)
      {
        int y=1;
        while(y<3)
        {
          System.out.println("y="+y);
          y++;
        }
      }

    public class ExciseB
    {
      public static void main(String[] args)
       {
        for(int x=1;x<3;x++)
        {
          System.out.println("x="+x);
        }
      }
    }

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  • 原文地址:https://www.cnblogs.com/kally004/p/7716222.html
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