File I/O - Java - page 542

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 represen-
tation 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.