Java 中的 StringTokenizer countTokens()方法，带示例
原文:https://www . geeksforgeeks . org/stringtokenizer-count token-method-in-Java-with-examples/
StringTokenizer 类的count token()方法计算在该方法生成任何进一步的异常之前，该标记器的 nextToken 方法可以被调用的次数。 注意:过程中当前位置不提前。
语法:
public int countTokens()
参数:该方法不取任何参数。
返回值:该方法用于使用当前分隔符集返回字符串中剩余的标记数。
下面的程序说明了 StringTokenizer 的 countTokens()方法的工作: 示例 1:
// Java code to illustrate countTokens() method
import java.util.*;
public class StringTokenizer_Demo1 {
public static void main(String args[])
{
// Creating a StringTokenizer
StringTokenizer str_arr
= new StringTokenizer(
"Lets practice at GeeksforGeeks");
// Counting the tokens
int count = str_arr.countTokens();
System.out.println("Total number of Tokens: "
+ count);
// Print the tokens
for (int i = 0; i < count; i++)
System.out.println("token at [" + i + "] : "
+ str_arr.nextToken());
}
}
Output:
Total number of Tokens: 4
token at [0] : Lets
token at [1] : practice
token at [2] : at
token at [3] : GeeksforGeeks
例 2:
// Java code to illustrate countTokens() method
import java.util.*;
public class StringTokenizer_Demo2 {
public static void main(String args[])
{
// Creating a StringTokenizer
StringTokenizer str_arr
= new StringTokenizer(
"Welcome to GeeksforGeeks");
// Counting the tokens
int count = str_arr.countTokens();
System.out.println("Total number of Tokens: "
+ count);
// Print the tokens
for (int i = 0; i < count; i++)
System.out.println("token at [" + i + "] : "
+ str_arr.nextToken());
}
}
Output:
Total number of Tokens: 3
token at [0] : Welcome
token at [1] : to
token at [2] : GeeksforGeeks
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