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Java Scanner Methods


Scanner Methods

The Scanner class can be used to obtain data from the keyboard, files and strings.

A list of useful Scanner methods can be found in the table below.

Method Description Return Type
close() Close the scanner object void
delimiter() Return the delimiter used to separate tokens Pattern
findInLine() Return a string which matches a regular expression in the current line String
findWithinHorizon() Return a string which matches a regular expression within a specified number of characters String
hasNext() Return true if another token can be found boolean
hasNextBoolean() Return true if the next token represents a boolean value boolean
hasNextByte() Return true if the next token represents a byte value boolean
hasNextDouble() Return true if the next token represents a number boolean
hasNextFloat() Return true if the next token represents a number boolean
hasNextInt() Return true if the next token represents an int value boolean
hasNextLine() Return true if another line of text is available in the scanner boolean
hasNextLong() Return true if the next token represents a long value boolean
hasNextShort() Return true if the next token represents a short value boolean
locale() Return the scanner's locale Locale
next() Return the next token in the scanner String
nextBoolean() Return the boolean value of the next token in the scanner boolean
nextByte() Return the byte value of the next token in the scanner byte
nextDouble() Return the double value of the next token in the scanner double
nextFloat() Return the float value of the next token in the scanner float
nextInt() Return the int value of the next token in the scanner int
nextLine() Return the next line of text in the scanner String
nextLong() Return the long value of the next token in the scanner long
nextShort() Return the short value of the next token in the scanner long
radix() Return the scanner's radix int
reset() Reset the scanner's configuration int
useDelimiter() Set the delimiter used by the scanner to separate tokens Scanner
useLocale() Set the locale used by the scanner Scanner
useRadix() Set the radix used by the scanner Scanner

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