- Java.util Package Classes
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- Java.util - Properties
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- Java.util - Random
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- Java.util - Scanner
- Java.util - ServiceLoader
- Java.util - SimpleTimeZone
- Java.util - Stack
- Java.util - StringTokenizer
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- Java.util - TimerTask
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- Java.util - UUID
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- Java.util Package Extras
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- Java.util - Enumerations
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- Java.util - Discussion
Java.util.Scanner.hasNext() Method
Description
The java.util.Scanner.hasNext() method Returns true if this scanner has another token in its input. This method may block while waiting for input to scan. The scanner does not advance past any input.
Declaration
Following is the declaration for java.util.Scanner.hasNext() method
public boolean hasNext()
Parameters
NA
Return Value
This method returns true if and only if this scanner has another token
Exception
IllegalStateException − if this scanner is closed
Example
The following example shows the usage of java.util.Scanner.hasNext() method.
package com.tutorialspoint; import java.util.*; import java.util.regex.Pattern; public class ScannerDemo { public static void main(String[] args) { String s = "Hello World! 3 + 3.0 = 6"; // create a new scanner with the specified String Object Scanner scanner = new Scanner(s); // check if the scanner has a token System.out.println("" + scanner.hasNext()); // print the rest of the string System.out.println("" + scanner.nextLine()); // check if the scanner has a token after printing the line System.out.println("" + scanner.hasNext()); // close the scanner scanner.close(); } }
Let us compile and run the above program, this will produce the following result −
true Hello World! 3 + 3.0 = 6 false
java_util_scanner.htm
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