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StringTokenizer in java
This document discusses the java.util.StringTokenizer class which allows breaking a string into tokens. It describes the constructors and methods of StringTokenizer, including how to count, check for, and retrieve the next token. An example program demonstrates its use by tokenizing a sample string and outputting the results.
In this document
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Introduces the java.util package, a core part of Java's standard library.
Explains the java.util.StringTokenizer class, its purpose for breaking strings into tokens, and its discouraged usage in modern applications.
Describes the different constructors of StringTokenizer, allowing tokenization of strings with or without delimiters.
Detailing methods of StringTokenizer such as counting tokens, checking for more tokens, and retrieving tokens.
Provides a sample program that demonstrates how to use the StringTokenizer class in Java.
Displays the sample output generated from the program using StringTokenizer.
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StringTokenizer in java
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- 2. String tokenizers ● Thejava.util.StringTokenizer class allows an application to break a string into tokens. ● 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.
- 3. Constructors in Stringtokenizers Constructors Description StringTokenizer(String str) This constructor a string tokenzier for the specified string StringTokenizer(String str,String delim) This constructor constructs string tokenizers for the specified string StringTokenizer(String str, String delim, boolean returnDelims) This constructopr constructs a string tyokenizer for the specified string.
- 4. Methods in StringTokenizer MethodDescription Int countTokens() This method calculates the number of times that this tokenizer's nextToken method can be called before it generates an exception Boolean hasMoreElements() This method returns the same value as the hasMoreTokens method Boolean hasMoreTokens() This method tests if there are more tokens available from this tokenizer's string Object nextElement() This method returns the same value as the nextToken method, except that its declared return value is Object rather than string String nextToken() This method returns the next token from this string tokenizer String nextToken(String delim) This method returns the next token in this string tokenizer's string
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