org.kalmeo.util
Class StringTokenizer

java.lang.Object
  extended by org.kalmeo.util.StringTokenizer

public class StringTokenizer
extends java.lang.Object

This is a copy of the StringTokenizer in JDK 1.4.2.


Field Summary
static java.lang.String DEFAULT_DELIM
           
 
Constructor Summary
StringTokenizer(java.lang.String str)
          Constructs a string tokenizer for the specified string.
StringTokenizer(java.lang.String str, java.lang.String delim)
          Constructs a string tokenizer for the specified string.
StringTokenizer(java.lang.String str, java.lang.String delim, boolean returnDelims)
          Constructs a string tokenizer for the specified string.
 
Method Summary
 int countTokens()
          Calculates the number of times that this tokenizer's nextToken method can be called before it generates an exception.
 boolean hasMoreElements()
          Returns the same value as the hasMoreTokens method.
 boolean hasMoreTokens()
          Tests if there are more tokens available from this tokenizer's string.
 java.lang.Object nextElement()
          Returns the same value as the nextToken method, except that its declared return value is Object rather than String.
 java.lang.String nextToken()
          Returns the next token from this string tokenizer.
 java.lang.String nextToken(java.lang.String delim)
          Returns the next token in this string tokenizer's string.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

DEFAULT_DELIM

public static final java.lang.String DEFAULT_DELIM
See Also:
Constant Field Values
Constructor Detail

StringTokenizer

public StringTokenizer(java.lang.String str)
Constructs a string tokenizer for the specified string. The tokenizer uses the default delimiter set, which is " \t\n\r\f": the space character, the tab character, the newline character, the carriage-return character, and the form-feed character. Delimiter characters themselves will not be treated as tokens.

Parameters:
str - a string to be parsed.

StringTokenizer

public StringTokenizer(java.lang.String str,
                       java.lang.String delim)
Constructs a string tokenizer for the specified string. The characters in the delim argument are the delimiters for separating tokens. Delimiter characters themselves will not be treated as tokens.

Parameters:
str - a string to be parsed.
delim - the delimiters.

StringTokenizer

public StringTokenizer(java.lang.String str,
                       java.lang.String delim,
                       boolean returnDelims)
Constructs a string tokenizer for the specified string. All characters in the delim argument are the delimiters for separating tokens.

If the returnDelims flag is true, then the delimiter characters are also returned as tokens. Each delimiter is returned as a string of length one. If the flag is false, the delimiter characters are skipped and only serve as separators between tokens.

Note that if delim is null, this constructor does not throw an exception. However, trying to invoke other methods on the resulting StringTokenizer may result in a NullPointerException.

Parameters:
str - a string to be parsed.
delim - the delimiters.
returnDelims - flag indicating whether to return the delimiters as tokens.
Method Detail

countTokens

public int countTokens()
Calculates the number of times that this tokenizer's nextToken method can be called before it generates an exception. The current position is not advanced.

Returns:
the number of tokens remaining in the string using the current delimiter set.
See Also:
nextToken()

hasMoreElements

public boolean hasMoreElements()
Returns the same value as the hasMoreTokens method. It exists so that this class can implement the Enumeration interface.

Returns:
true if there are more tokens; false otherwise.
See Also:
Enumeration, hasMoreTokens()

hasMoreTokens

public boolean hasMoreTokens()
Tests if there are more tokens available from this tokenizer's string. If this method returns true, then a subsequent call to nextToken with no argument will successfully return a token.

Returns:
true if and only if there is at least one token in the string after the current position; false otherwise.

nextElement

public java.lang.Object nextElement()
Returns the same value as the nextToken method, except that its declared return value is Object rather than String. It exists so that this class can implement the Enumeration interface.

Returns:
the next token in the string.
Throws:
java.util.NoSuchElementException - if there are no more tokens in this tokenizer's string.
See Also:
Enumeration, nextToken()

nextToken

public java.lang.String nextToken()
Returns the next token from this string tokenizer.

Returns:
the next token from this string tokenizer.
Throws:
java.util.NoSuchElementException - if there are no more tokens in this tokenizer's string.

nextToken

public java.lang.String nextToken(java.lang.String delim)
Returns the next token in this string tokenizer's string. First, the set of characters considered to be delimiters by this StringTokenizer object is changed to be the characters in the string delim. Then the next token in the string after the current position is returned. The current position is advanced beyond the recognized token. The new delimiter set remains the default after this call.

Parameters:
delim - the new delimiters.
Returns:
the next token, after switching to the new delimiter set.
Throws:
java.util.NoSuchElementException - if there are no more tokens in this tokenizer's string.


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