There are different ways to input data from the user using Scanner Class. Every time when we need input from the user a Scanner object is declared. Sometimes there is a possibility of getting a restriction on the number of objects that can be created. So we may not get a chance to create another object in order to input data from the user. In such a situation, we can pass a Scanner object that is already created as a parameter to the method where you need to input the data. The below code helps you to get a clear idea about it!
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Java Deprecated API Scanner tool: Java Deprecated API Scanner tool i.e. jdeprscan is a static analyzing command-line tool which is introduced in JDK 9 for find out the uses of deprecated API in the given input. Here the input can be .class file name, directory or JAR file. Whenever we provide any input to jdeprscan command line tool then it generat
2 min read java.lang.reflect.Parameter Class in Javajava.lang.reflect.Parameter class provides Information about method parameters, including their name and modifiers. It also provides an alternate means of obtaining attributes for the parameter. Some useful methods of Parameter class are: public int getModifiers(): It returns the modifier flags for the parameter represented by this Parameter object
4 min read Scanner nextFloat() method in Java with ExamplesThe nextFloat() method of java.util.Scanner class scans the next token of the input as a Float(). If the translation is successful, the scanner advances past the input that matched. Syntax: public float nextFloat() Parameters: The function does not accepts any parameter. Return Value: This function returns the Float scanned from the input. Exceptio
4 min read Scanner skip() method in Java with Examplesskip(Pattern pattern) The skip(Pattern pattern) method of java.util.Scanner class skips input that matches the specified pattern, ignoring the delimiters. The function skips the input if an anchored match of the specified pattern succeeds it. Syntax: public Scanner skip(Pattern pattern) Parameters: The function accepts a mandatory parameter pattern
5 min read Scanner useRadix() method in Java with ExamplesThe useRadix(radix) method of java.util.Scanner class sets this scanner's default radix to the specified radix. A scanner's radix affects elements of its default number matching regular expressions. Syntax: public Scanner useRadix(int radix) Parameters: The function accepts a mandatory parameter radix which specifies the radix to use when scanning
2 min read Scanner close() method in Java with ExamplesThe close() method ofjava.util.Scanner class closes the scanner which has been opened. If the scanner is already closed then on calling this method, it will have no effect. Syntax: public void close() Return Value: The function does not return any value. Below programs illustrate the above function: Program 1: // Java program to illustrate the // c
1 min read Scanner delimiter() method in Java with ExamplesThe delimiter() method ofjava.util.Scanner class returns the Pattern this Scanner is currently using to match delimiters. Syntax: public Pattern delimiter() Return Value: The function returns the scanner's delimiting pattern. Below programs illustrate the above function: Program 1: // Java program to illustrate the // delimiter() method of Scanner
2 min read Scanner findInLine() method in Java with ExamplesfindInLine(Pattern pattern) The findInLine(Pattern pattern) method of java.util.Scanner class tries to find the next occurrence of the specified pattern ignoring delimiters. If the pattern is found before the next line separator, the scanner advances past the input that matched and returns the string that matched the pattern. If no such pattern is
4 min read Scanner useLocale() method in Java with ExamplesThe useLocale() method of java.util.Scanner class sets this scanner's locale to the specified locale. Syntax: public Scanner useLocale(Locale locale) Parameters: The function accepts a mandatory parameter locale which specifies a string specifying the locale to use. Return Value: The function returns this modified scanner. Exceptions: If the radix
2 min read Scanner toString() method in Java with ExamplesThe toString() method of java.util.Scanner class returns the string representation of this Scanner. The exact format is unspecified. Syntax: public String toString() Return Value: This function returns the string representation of this scanner. Below program illustrates the above function: Program 1: // Java program to illustrate the // toString()
1 min read Scanner useDelimiter() method in Java with ExamplesuseDelimiter(Pattern pattern) The useDelimiter(Pattern pattern) method of java.util.Scanner class sets this scanner's delimiting pattern to the specified pattern. Syntax: public Scanner useDelimiter(Pattern pattern) Parameter: The function accepts a mandatory parameter pattern which specifies a delimiting pattern. Return Value: The function returns
2 min read Scanner reset() method in Java with ExamplesThe reset() method of java.util.Scanner class resets this scanner. On resetting a scanner, it discards all of its explicit state information which may have been changed by invocations of useDelimiter(java.util.regex.Pattern), useLocale(java.util.Locale), or useRadix(int). Syntax: public Scanner reset() Return Value: This function returns this scann
2 min read Scanner radix() method in Java with ExamplesThe radix() method of java.util.Scanner class returns this scanner's default radix. Syntax: public int radix() Return Value: This function returns the default radix of this scanner. Below programs illustrate the above function: Program 1: // Java program to illustrate the // radix() method of Scanner class in Java import java.util.*; public class G
2 min read Scanner nextShort() method in Java with ExamplesThe nextShort(radix) method of java.util.Scanner class scans the next token of the input as a short. If the translation is successful, the scanner advances past the input that matched. If the parameter radix is not passed, then it behaves similarly as nextShort(radix) where the radix is assumed to be the default radix. Syntax: public short nextShor
5 min read Scanner nextBigInteger() method in Java with ExamplesThe nextBigInteger(radix) method of java.util.Scanner class scans the next token of the input as a BigInteger. If the translation is successful, the scanner advances past the input that matched. If the parameter radix is not passed, then it behaves similarly as nextBigInteger(radix) where the radix is assumed to be the default radix. Syntax: public
5 min read Scanner nextByte() method in Java with ExamplesThe nextByte(radix) method of java.util.Scanner class scans the next token of the input as a Byte. If the translation is successful, the scanner advances past the input that matched. If the parameter radix is not passed, then it behaves similarly as nextByte(radix) where the radix is assumed to be the default radix. Syntax: public byte nextByte() P
5 min read Scanner nextInt() method in Java with ExamplesThe nextInt(radix) method of java.util.Scanner class scans the next token of the input as a Int. If the translation is successful, the scanner advances past the input that matched. If the parameter radix is not passed, then it behaves similarly as nextInt(radix) where the radix is assumed to be the default radix. Syntax: public int nextInt() Parame
5 min read Scanner nextLong() method in Java with ExamplesThe nextLong(radix) method of java.util.Scanner class scans the next token of the input as a long. If the translation is successful, the scanner advances past the input that matched. If the parameter radix is not passed, then it behaves similarly as nextLong(radix) where the radix is assumed to be the default radix. Syntax: public long nextLong() P
5 min read Scanner nextDouble() method in Java with ExamplesThe nextDouble() method of java.util.Scanner class scans the next token of the input as a Double. If the translation is successful, the scanner advances past the input that matched. Syntax: public double nextDouble() Parameters: The function does not accepts any parameter. Return Value: This function returns the Double scanned from the input. Excep
4 min read Scanner nextBoolean() method in Java with ExamplesThe nextBoolean() method of java.util.Scanner class scans the next token of the input as a Boolean. If the translation is successful, the scanner advances past the input that matched. Syntax: public boolean nextBoolean() Parameters: The function does not accepts any parameter. Return Value: This function returns the Boolean scanned from the input.
4 min read Scanner nextBigDecimal() method in Java with ExamplesThe nextBigDecimal() method of java.util.Scanner class scans the next token of the input as a BigDecimal. If the next token matches the Decimal regular expression defined above then the token is converted into a BigDecimal value as if by removing all group separators, mapping non-ASCII digits into ASCII digits via the Character.digit, and passing t
4 min read Scanner nextLine() method in Java with ExamplesThe nextLine() method of java.util.Scanner class advances this scanner past the current line and returns the input that was skipped. This function prints the rest of the current line, leaving out the line separator at the end. The next is set to after the line separator. Since this method continues to search through the input looking for a line sep
2 min read Scanner locale() method in Java with ExamplesThe locale() method of java.util.Scanner class returns this scanner's locale. Syntax: public Locale locale() Parameters: The function does not accepts any parameter. Return Value: This function returns this scanner's locale Below programs illustrate the above function: Program 1: // Java program to illustrate the // locale() method of Scanner class
1 min read Scanner match() method in Java with ExampleThe match() method of java.util.Scanner class returns the match result of the last scanning operation performed by this scanner. Syntax: public MatchResult match() Return Value: This function returns a match result for the last match operation. Exceptions: The function throws IllegalStateException if no match has been performed, or if the last matc
2 min read Scanner ioException() method in Java with ExamplesThe ioException() method of java.util.Scanner class returns the IOException last thrown by this Scanner's underlying Readable. This method returns null if no such exception exists. Syntax: public IOException ioException() Return Value: This function returns the last exception thrown by this scanner's readable. Below programs illustrate the above fu
2 min read Scanner hasNextShort() method in Java with ExamplesThe hasNextShort() method of java.util.Scanner class returns true if the next token in this scanner's input can be assumed as a short value of the given radix. The scanner does not advance past any input. In case no radix is passed as a parameter, the function interprets the radix to be default radix and functions accordingly. Syntax: public boolea
3 min read Scanner hasNextLong() method in Java with ExamplesThe hasNextLong() method of java.util.Scanner class returns true if the next token in this scanner's input can be assumed as a Long value of the given radix. The scanner does not advance past any input. In case no radix is passed as a parameter, the function interprets the radix to be default radix and functions accordingly. Syntax: public boolean
3 min read Scanner hasNextByte() method in Java with ExamplesThe hasNextByte() method of java.util.Scanner class returns true if the next token in this scanner's input can be assumed as a Byte value of the given radix. The scanner does not advance past any input. In case no radix is passed as a parameter, the function interprets the radix to be default radix and functions accordingly. Syntax: public boolean
3 min read Scanner hasNextInt() method in Java with ExamplesThe hasNextInt() method of java.util.Scanner class returns true if the next token in this scanner's input can be assumed as a Int value of the given radix. The scanner does not advance past any input. In case no radix is passed as a parameter, the function interprets the radix to be default radix and functions accordingly. Syntax: public boolean ha
3 min read Scanner hasNextBigInteger() method in Java with ExamplesThe hasNextBigInteger() method of java.util.Scanner class returns true if the next token in this scanner's input can be assumed as a BigInteger value of the given radix. The scanner does not advance past any input. In case no radix is passed as a parameter, the function interprets the radix to be default radix and functions accordingly. Syntax: pub