![]() Let's see a simple example of Java Scanner where we are getting a single input from the user. It is used to set the default radix of the Scanner which is in use to the specified radix. It is used to sets this scanner's locale object to the specified locale. It is used to set the delimiting pattern of the Scanner which is in use to the specified pattern. It is used to get the string representation of Scanner using. It is used to get a stream of delimiter-separated tokens from the Scanner object which is in use. It skips input that matches the specified pattern, ignoring delimiters It is used to reset the Scanner which is in use. It is used when remove operation is not supported by this implementation of Iterator. It is used to get the default radix of the Scanner use. It scans the next token of the input as a short. It scans the next token of the input as a long. It is used to get the input string that was skipped of the Scanner object. It scans the next token of the input as an Int. It scans the next token of the input as a float. It scans the next token of the input as a double. It scans the next token of the input as a byte. It scans the next token of the input into a boolean value and returns that value. It scans the next token of the input as a BigInteger. It scans the next token of the input as a BigDecimal. It is used to get the next complete token from the scanner which is in use. It is used to get the match result of the last scanning operation performed by this scanner. It is used to get a Locale of the Scanner class. It is used to get the IOException last thrown by this Scanner's readable. It is used to check if the next token in this scanner's input can be interpreted as a Short using the nextShort() method or not. ![]() It is used to check if the next token in this scanner's input can be interpreted as a Long using the nextLong() method or not. It is used to check if there is another line in the input of this scanner or not. It is used to check if the next token in this scanner's input can be interpreted as an int using the nextInt() method or not. It is used to check if the next token in this scanner's input can be interpreted as a Float using the nextFloat() method or not. It is used to check if the next token in this scanner's input can be interpreted as a BigDecimal using the nextByte() method or not. It is used to check if the next token in this scanner's input can be interpreted as a Byte using the nextBigDecimal() method or not. It is used to check if the next token in this scanner's input can be interpreted as a Boolean using the nextBoolean() method or not. It is used to check if the next token in this scanner's input can be interpreted as a BigDecimal using the nextBigDecimal() method or not. ![]() It returns true if this scanner has another token in its input. It is used to find the next occurrence of a pattern constructed from the specified string, ignoring delimiters. It is used to find a stream of match results that match the provided pattern string. It is used to get the Pattern which the Scanner class is currently using to match delimiters. The following are the list of Scanner methods: SN Scanner(ReadableByteChannel source, String charsetName) It constructs a new Scanner that produces values scanned from the specified channel. It constructs a new Scanner that produces values scanned from the specified string. It constructs a new Scanner that produces values scanned from the specified source. Scanner(InputStream source, String charsetName) It constructs a new Scanner that produces values scanned from the specified input stream. It constructs a new Scanner that produces values scanned from the specified file. Scanner in = new Scanner("Hello Javatpoint") To get a single character from the scanner, you can call next().charAt(0) method which returns a single character. The Java Scanner class provides nextXXX() methods to return the type of value such as nextInt(), nextByte(), nextShort(), next(), nextLine(), nextDouble(), nextFloat(), nextBoolean(), etc. The Java Scanner class extends Object class and implements Iterator and Closeable interfaces. By the help of Scanner in Java, we can get input from the user in primitive types such as int, long, double, byte, float, short, etc. It is the simplest way to get input in Java. The Java Scanner class is widely used to parse text for strings and primitive types using a regular expression. It provides many methods to read and parse various primitive values. The Java Scanner class breaks the input into tokens using a delimiter which is whitespace by default. Java provides various ways to read input from the keyboard, the class is one of them. Scanner class in Java is found in the java.util package. ![]()
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