第三周

1
public class Lin{
   public static void main(String[] args)
   {
       long l=123456789012345l;
      System.out.println(l);
   }
}
2.
public class Float{
   public static void main(String[] args)
   {
       float f=2.4f;
      System.out.println(f);
   }
}
3.
public class Bl{
   public static void main(String[] args)
   {
       boolean b=true;
       System.out.println(b);
       b=false;
　　　　System.out.println(b);   
   }
}

4.
public class Be{
   public static void main(String[] args)
   {
       byte b=3;
    b=(byte)(b+200);
  System.out.println(b);   
   }
}
5.
public class So{
   public static void main(String[] args)
   {
        System.out.println((char)('a'+1));
        System.out.println((char)('你'+1));
   }
}

6.

public class M{
   public static void main(String[] args)
   {
  int i=Integer.MAX_VALUE+1;
  System.out.println(i);
   }
}
7.

import java.util.Scanner;
public class Mh{
   public static void main(String[] args)
   {
        Scanner input=new Scanner(System.in);
  double x;
  System.out.println("Enter the x ");
        x = Double.valueOf(input.nextDouble());
  x=x/1000*1000;
  System.out.println("The calculation result is " + x);
   }
}