Java中常见的几种类型转换

 1 public class ChangeClass
 2 {
 3     public static void main(String[] args){
 4         
 5         //Int型数字转换成字符串
 6         int num1=123456;
 7         //方法1
 8         String str1=num1+"";  
 9         System.out.println(str1);
10         //方法2
11         String str2=String.valueOf(num1);    
12         System.out.println(str2);
13         
14         //字符串中数字转换成Int型数字
15         String str3=new String("9876543");
16         int num2=Integer.parseInt(str3);
17         System.out.println(num1+num2);
18         
19         //字符转换成字符型数组
20         String str4="HRuinger";
21         char a[]=str4.toCharArray();
22         for(int i:a)
23           System.out.print((char)i+" ");
24           System.out.println();
25          
26         //字符型数组转换成字符串
27         char b[]={'H','R','u','i','n','g'};
28         String str5=String.valueOf(b);
29         System.out.println(str5);
30         
31         //整型与字符型数值的转换
32         char c='3';
33         System.out.println(c-'0');     //此处也可以为c-48
34         int d=5;
35         System.out.println((char)(d+'0'));    //此处也可以为c+48
36     }
37 }
Writer HRuinger