1 import java.util.StringTokenizer;
 2 
 3 //利用StringTokenizer()方法去除字符串中 的所有空格
 4 
 5 public class StringTo {
 6 
 7     public static void main(String[] args) {
 8         // TODO Auto-generated method stub
 9         String text = "    We love study   ";
10         System.out.println("原字符串是：");
11         System.out.println(text);
12         StringTokenizer st = new StringTokenizer(text," ");//要从text字符串中去除的字符为空格
13         StringBuffer sb = new StringBuffer();
14 //        int i = 1;
15         while(st.hasMoreTokens()){
16 //            i++;
17             sb.append(st.nextToken());
18         }
19         System.out.println("去除字符串中所有空格之后的字符串是：");
20         System.out.println(sb.toString());
21         
22     }
23 
24 }

1         String s = "J A V A 编 程 思 想 ";
2         s = s.replace(" ", "");
3         System.out.println("去除空格后的字符串为："+s);