StreamTokenizer JDK 1.6)

Methods

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public void commentChar (int ch)

Specified that the character argument starts a single-line comment.

public void eolIsSignificant (boolean flag)

Determines whether or not ends of line are treated as tokens.

Determines whether or not ends of line are treated as tokens. If the flag argument is true, this tokenizer treats end of lines as tokens; the nextToken method returns TT_EOL and also sets the ttype field to this value when an end of line is read.

A line is a sequence of characters ending with either a carriage-return character ('\r') or a newline character ('\n'). In addition, a carriage-return character followed immediately by a newline character is treated as a single end-of-line token.

If the flag is false, end-of-line characters are treated as white space and serve only to separate tokens.
Parameters:
- flag - true indicates that end-of-line characters are separate tokens; false indicates that end-of-line characters are white space.
See Also: StreamTokenizer.nextToken(), StreamTokenizer.ttype, StreamTokenizer.TT_EOL,

public int lineno ()

Return the current line number.

public void lowerCaseMode (boolean fl)

Determines whether or not word token are automatically lowercased.

Determines whether or not word token are automatically lowercased. If the flag argument is true, then the value in the sval field is lowercased whenever a word token is returned (the ttype field has the value TT_WORD by the nextToken method of this tokenizer.

If the flag argument is false, then the sval field is not modified.
Parameters:
- fl - true indicates that all word tokens should be lowercased.
See Also: StreamTokenizer.nextToken(), StreamTokenizer.ttype, StreamTokenizer.TT_WORD,

public int nextToken () throws IOException

Parses the next token from the input stream of this tokenizer.

Parses the next token from the input stream of this tokenizer. The type of the next token is returned in the ttype field. Additional information about the token may be in the nval field or the sval field of this tokenizer.

Typical clients of this class first set up the syntax tables and then sit in a loop calling nextToken to parse successive tokens until TT_EOF is returned.
Returns: the value of the ttype field.
Throws:
- IOException - if an I/O error occurs.
See Also: StreamTokenizer.nval, StreamTokenizer.sval, StreamTokenizer.ttype,

public void ordinaryChar (int ch)

Specifies that the character argument is "ordinary" in this tokenizer.

Specifies that the character argument is "ordinary" in this tokenizer. It removes any special significance the character has as a comment character, word component, string delimiter, white space, or number character. When such a character is encountered by the parser, the parser treats it as a single-character token and sets ttype field to the character value.

Making a line terminator character "ordinary" may interfere with the ability of a StreamTokenizer to count lines. The lineno method may no longer reflect the presence of such terminator characters in its line count.
Parameters:
- ch - the character.
See Also: StreamTokenizer.ttype,

public void ordinaryChars (int low, int hi)

Specifies that all characters c in the range low <= c <= high are "ordinary" in this tokenizer.

Specifies that all characters c in the range
low <= c <= high
are "ordinary" in this tokenizer. See the
ordinaryChar method for more information on a
character being ordinary.
Parameters:
- low - the low end of the range.
- hi - the high end of the range.
See Also: StreamTokenizer.ordinaryChar(int),

public void parseNumbers ()

Specifies that numbers should be parsed by this tokenizer.

public void pushBack ()

Causes the next call to the nextToken method of this tokenizer to return the current value in the ttype field, and not to modify the value in the nval or sval field.

Causes the next call to the nextToken method of this
tokenizer to return the current value in the ttype
field, and not to modify the value in the nval or
sval field.
See Also: StreamTokenizer.nextToken(), StreamTokenizer.nval, StreamTokenizer.sval, StreamTokenizer.ttype,

public void quoteChar (int ch)

Specifies that matching pairs of this character delimit string constants in this tokenizer.

public void resetSyntax ()

Resets this tokenizer's syntax table so that all characters are "ordinary." See the ordinaryChar method for more information on a character being ordinary.

Resets this tokenizer's syntax table so that all characters are
"ordinary." See the ordinaryChar method
for more information on a character being ordinary.
See Also: StreamTokenizer.ordinaryChar(int),

public void slashSlashComments (boolean flag)

Determines whether or not the tokenizer recognizes C++-style comments.

Determines whether or not the tokenizer recognizes C++-style comments. If the flag argument is true, this stream tokenizer recognizes C++-style comments. Any occurrence of two consecutive slash characters ('/') is treated as the beginning of a comment that extends to the end of the line.

If the flag argument is false, then C++-style comments are not treated specially.
Parameters:
- flag - true indicates to recognize and ignore C++-style comments.

public void slashStarComments (boolean flag)

Determines whether or not the tokenizer recognizes C-style comments.

Determines whether or not the tokenizer recognizes C-style comments. If the flag argument is true, this stream tokenizer recognizes C-style comments. All text between successive occurrences of /* and */ are discarded.

If the flag argument is false, then C-style comments are not treated specially.
Parameters:
- flag - true indicates to recognize and ignore C-style comments.

public String toString ()

Returns the string representation of the current stream token and the line number it occurs on.

public void whitespaceChars (int low, int hi)

Specifies that all characters c in the range low <= c <= high are white space characters.

Specifies that all characters c in the range low <= c <= high are white space characters. White space characters serve only to separate tokens in the input stream.

Any other attribute settings for the characters in the specified range are cleared.
Parameters:
- low - the low end of the range.
- hi - the high end of the range.

public void wordChars (int low, int hi)

Specifies that all characters c in the range low <= c <= high are word constituents.

Specifies that all characters c in the range
low <= c <= high
are word constituents. A word token consists of a word constituent
followed by zero or more word constituents or number constituents.
Parameters:
- low - the low end of the range.
- hi - the high end of the range.

Fields

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public double nval

If the current token is a number, this field contains the value of that number.

If the current token is a number, this field contains the value of that number. The current token is a number when the value of the ttype field is TT_NUMBER.

The initial value of this field is 0.0.
See Also: StreamTokenizer.TT_NUMBER, StreamTokenizer.ttype,

public String sval

If the current token is a word token, this field contains a string giving the characters of the word token.

publicfinalstatic int TT_EOF = "-1"

A constant indicating that the end of the stream has been read.

publicfinalstatic int TT_EOL = "10"

A constant indicating that the end of the line has been read.

publicfinalstatic int TT_NUMBER = "-2"

A constant indicating that a number token has been read.

publicfinalstatic int TT_WORD = "-3"

A constant indicating that a word token has been read.

public int ttype

After a call to the nextToken method, this field contains the type of the token just read.

After a call to the nextToken method, this field contains the type of the token just read. For a single character token, its value is the single character, converted to an integer. For a quoted string token, its value is the quote character. Otherwise, its value is one of the following:

TT_WORD indicates that the token is a word.
TT_NUMBER indicates that the token is a number.
TT_EOL indicates that the end of line has been read. The field can only have this value if the eolIsSignificant method has been called with the argument true.
TT_EOF indicates that the end of the input stream has been reached.

The initial value of this field is -4.
See Also: StreamTokenizer.eolIsSignificant(boolean), StreamTokenizer.nextToken(), StreamTokenizer.quoteChar(int), StreamTokenizer.TT_EOF, StreamTokenizer.TT_EOL, StreamTokenizer.TT_NUMBER, StreamTokenizer.TT_WORD,