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1 Enumeration 接口
- 比较古老的接口;
- 作用和 Iterator 类似,都是输出数据;
- 方法:
hasMoreElements()
,nextElement()
package day04.en;
import java.util.Enumeration;
import java.util.Vector;
public class Demo1 {
public static void main(String[] args) {
Vector<String> vector = new Vector<>();
vector.add("AAA");
vector.add("BBB");
vector.add("CCC");
vector.add("DDD");
Enumeration<String> en = vector.elements();
while(en.hasMoreElements()){
System.out.println(en.nextElement());
}
}
}
2 StringTokenizer
- 用于字符串的分割
- 不支持正则
package day04.en;
import java.util.StringTokenizer;
public class Demo2 {
public static void main(String[] args) {
String emailStr = "[email protected];[email protected];[email protected]";
StringTokenizer token = new StringTokenizer(emailStr,";");
while(token.hasMoreElements()){
System.out.println(token.nextElement());
}
}
}