开发笔记:7替换空格

1 public class Demo6 {
2
3 public static void main(String[] args) {
4 String str = "We Are Happy";
5 String replaceSpace = replaceSpace(new StringBuffer(str));
6 System.out.println(replaceSpace);
7 }
8
9 public static String replaceSpace(StringBuffer str) {
10 if(str == null){
11 return null;
12 }
13 //把str转成String类型
14 String string = str.toString();
15 String replaceStr = string.replace(" ", "%20");
16 return replaceStr;
17 }
18 }