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 }
