StringTokenizer in Java

The java.util.StringTokenizer class allows you to break a string into tokens. It is simple way to break string.

  • This class is a legacy class that is retained for compatibility reasons although its use is discouraged in new code.
  • Its methods do not distinguish among identifiers, numbers, and quoted strings.
  • This class methods do not even recognize and skip comments.

Constructors of StringTokenizer class

There are 3 constructors defined in the StringTokenizer class.

Constructor Description
StringTokenizer(String str) creates StringTokenizer with specified string.
StringTokenizer(String str, String delim) creates StringTokenizer with specified string and delimeter.
StringTokenizer(String str, String delim, boolean returnValue) creates StringTokenizer with specified string, delimeter and returnValue. If return value is true, delimiter characters are considered to be tokens. If it is false, delimiter characters serve to separate tokens.

Methods of StringTokenizer class

The 6 useful methods of StringTokenizer class are as follows:

Public method Description
boolean hasMoreTokens() checks if there is more tokens available.
String nextToken() returns the next token from the StringTokenizer object.
String nextToken(String delim) returns the next token based on the delimeter.
boolean hasMoreElements() same as hasMoreTokens() method.
Object nextElement() same as nextToken() but its return type is Object.
int countTokens() returns the total number of tokens.

Simple example of StringTokenizer class

 import java.util.StringTokenizer;  
public class Simple{  
 public static void main(String args[]){  
   StringTokenizer st = new StringTokenizer("Mithilesh Singh"," ");  
     while (st.hasMoreTokens()) {  
         System.out.println(st.nextToken());  
     }  
   }  
}