Java util stringtokenizer nexttoken

Class StringTokenizer

The string tokenizer class allows an application to break a string into tokens. The tokenization method is much simpler than the one used by the StreamTokenizer class. The StringTokenizer methods do not distinguish among identifiers, numbers, and quoted strings, nor do they recognize and skip comments.

The set of delimiters (the characters that separate tokens) may be specified either at creation time or on a per-token basis.

• If the flag is false , delimiter characters serve to separate tokens. A token is a maximal sequence of consecutive characters that are not delimiters.
• If the flag is true , delimiter characters are themselves considered to be tokens. A token is thus either one delimiter character, or a maximal sequence of consecutive characters that are not delimiters.

A StringTokenizer object internally maintains a current position within the string to be tokenized. Some operations advance this current position past the characters processed.

A token is returned by taking a substring of the string that was used to create the StringTokenizer object.

The following is one example of the use of the tokenizer. The code:

StringTokenizer st = new StringTokenizer(«this is a test»); while (st.hasMoreTokens())

prints the following output:

StringTokenizer is a legacy class that is retained for compatibility reasons although its use is discouraged in new code. It is recommended that anyone seeking this functionality use the split method of String or the java.util.regex package instead.

The following example illustrates how the String.split method can be used to break up a string into its basic tokens:

String[] result = "this is a test".split("\\s"); for (int x=0; x
prints the following output:
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String Tokenizer. Next Token Method
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Overloads
Returns the next token from this string tokenizer.
Returns the next token in this string tokenizer's string.
NextToken()
Returns the next token from this string tokenizer.
[Android.Runtime.Register("nextToken", "()Ljava/lang/String;", "GetNextTokenHandler")] public virtual string? NextToken ();
 
[] abstract member NextToken : unit -> string override this.NextToken : unit -> string
 
Returns
 
the next token from this string tokenizer.
 
Exceptions
 
Remarks
 
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
 
Applies to
 
NextToken(String)
 
Returns the next token in this string tokenizer's string.
 
[Android.Runtime.Register("nextToken", "(Ljava/lang/String;)Ljava/lang/String;", "GetNextToken_Ljava_lang_String_Handler")] public virtual string? NextToken (string? delim);
 
[] abstract member NextToken : string -> string override this.NextToken : string -> string
 
Parameters
 
Returns
 
the next token, after switching to the new delimiter set.
 
Exceptions
 
Remarks
 
Portions of this page are modifications based on work created and shared by the Android Open Source Project and used according to terms described in the Creative Commons 2.5 Attribution License.
 
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Class StringTokenizer
 
The string tokenizer class allows an application to break a string into tokens. The tokenization method is much simpler than the one used by the StreamTokenizer class. The StringTokenizer methods do not distinguish among identifiers, numbers, and quoted strings, nor do they recognize and skip comments.
 
The set of delimiters (the characters that separate tokens) may be specified either at creation time or on a per-token basis.
 
 
If the flag is false , delimiter characters serve to separate tokens. A token is a maximal sequence of consecutive characters that are not delimiters.
 
If the flag is true , delimiter characters are themselves considered to be tokens. A token is thus either one delimiter character, or a maximal sequence of consecutive characters that are not delimiters.
 
 
A StringTokenizer object internally maintains a current position within the string to be tokenized. Some operations advance this current position past the characters processed.
 
A token is returned by taking a substring of the string that was used to create the StringTokenizer object.
 
The following is one example of the use of the tokenizer. The code:
 
StringTokenizer st = new StringTokenizer("this is a test"); while (st.hasMoreTokens())
 
prints the following output:
 
StringTokenizer is a legacy class that is retained for compatibility reasons although its use is discouraged in new code. It is recommended that anyone seeking this functionality use the split method of String or the java.util.regex package instead.
 
The following example illustrates how the String.split method can be used to break up a string into its basic tokens:
 
String[] result = "this is a test".split("\\s"); for (int x=0; x

prints the following output:
Constructor Summary
Method Summary
Calculates the number of times that this tokenizer's nextToken method can be called before it generates an exception.
Returns the same value as the nextToken method, except that its declared return value is Object rather than String .
Methods declared in class java.lang.Object
Methods declared in interface java.util.Enumeration
Constructor Details
StringTokenizer
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 consisting of a single Unicode code point of the delimiter (which may be one or two char s). 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 .
StringTokenizer
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. 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 .
StringTokenizer
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.
Method Details
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.
nextToken
nextToken
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.
hasMoreElements
Returns the same value as the hasMoreTokens method. It exists so that this class can implement the Enumeration interface.
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.
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.
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