File I/O - Absolute Java - page 597

Display 10.6 Methods in the Class Scanner (part 3 of 4)

public boolean hasNextDouble()

Returns true if the next token is a well-formed string representation of a double ; otherwise
returns false.

Throws an IllegalStateException if the Scanner stream is closed.
public float nextFloat()

Returns the next token as a float , provided the next token is a well-formed string representation
of a float .

Throws a NoSuchElementException if there are no more tokens.

Throws an InputMismatchException if the next token is not a well-formed string representation
of a float .

Throws an IllegalStateException if the Scanner stream is closed.
public boolean hasNextFloat()

Returns true if the next token is a well-formed string representation of a float ; otherwise
returns false .

Throws an IllegalStateException if the Scanner stream is closed.
public String next()

Returns the next token.

Throws a NoSuchElementException if there are no more tokens.

Throws an IllegalStateException if the Scanner stream is closed.
public boolean hasNext()

Returns true if there is another token. May wait for a next token to enter the stream.

Throws an IllegalStateException if the Scanner stream is closed.
public boolean nextBoolean()

Returns the next token as a boolean value, provided the next token is a well-formed string
representation of a boolean .

Throws a NoSuchElementException if there are no more tokens.

Throws an InputMismatchException if the next token is not a well-formed string representation
of a boolean value.
Throws an IllegalStateException if the Scanner stream is closed.
public boolean hasNextBoolean()

Returns true if the next token is a well-formed string representation of a boolean value; otherwise
returns false .

Throws an IllegalStateException if the Scanner stream is closed.

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