Java 中 StringTokenizer hasMoreElements()方法示例
原文:https://www . geeksforgeeks . org/stringtokenizer-hasmorelements-method-in-Java-with-examples/
StringTokenizer 类的hasmorelements()方法也检查这个 StringTokenizer 是否还有可用的令牌。它类似于 hasMoreTokens()。方法以独占方式存在,以便可以实现此类的枚举接口。
语法:
public boolean hasMoreElements()
参数:该方法不取任何参数。
返回值:如果在当前位置之后的字符串中发现至少还有一个令牌可用,则该方法返回布尔值 True,否则返回 false。
下面的程序说明了 StringTokenizer 的 hasMoreElements()方法的工作: 示例 1:
// Java code to illustrate hasMoreElements() method
import java.util.*;
public class StringTokenizer_Demo {
public static void main(String args[])
{
// Creating a StringTokenizer
StringTokenizer str_arr
= new StringTokenizer(
"Lets practice at GeeksforGeeks");
// Counting the tokens
System.out.println("The number of Tokens are: "
+ str_arr.countTokens());
// Checking for any tokens
System.out.println(str_arr.hasMoreElements());
// Checking and displaying the Tokens
while (str_arr.hasMoreElements()) {
System.out.println("The Next token: "
+ str_arr.nextToken());
}
}
}
Output:
The number of Tokens are: 4
true
The Next token: Lets
The Next token: practice
The Next token: at
The Next token: GeeksforGeeks
例 2:
// Java code to illustrate hasMoreElements() method
import java.util.*;
public class StringTokenizer_Demo {
public static void main(String args[])
{
// Creating a StringTokenizer
StringTokenizer str_arr
= new StringTokenizer("");
// Counting the tokens
System.out.println("The number of Tokens are: "
+ str_arr.countTokens());
// Checking for any tokens
System.out.println(str_arr.hasMoreElements());
}
}
Output:
The number of Tokens are: 0
false
版权属于:月萌API www.moonapi.com,转载请注明出处