0928练习作业

 1 package hello;
 2 
 3 public class hello {
 4 
 5     public static void main(String[] args) {
 6 
 7 
 8         byte b=12;
 9         System.out.println("b="+b);
10         
11         short s=3;
12         System.out.println("s="+s);
13         
14         int i =45;
15         System.out.println("i="+i);
16         
17         long l=56;
18         System.out.println("l="+l);
19         
20         float f=78.89f;    //数后要加F或f做标记
21         System.out.println("f="+f);
22         
23         double d=234.45;
24         System.out.println("d="+d);
25         
26         //‘a‘是字符
27         char c=‘9‘;
28         System.out.println("c="+c);//"a"是字符串
29         
30         boolean x=true;
31         System.out.println("zhen="+x);
32         
33         boolean y=false;
34         System.out.println("jia="+y);
35         
36         final float PAI;
37         PAI=1.23456f;
38         System.out.println("PAI="+PAI);
39 
40     }
41 
42 }