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- Java.util - Scanner
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- Java.util Package Extras
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Java.util.Scanner.hasNextInt() Method
Description
The java.util.Scanner.hasNextInt(int radix) method returns true if the next token in this scanner's input can be interpreted as an int value in the specified radix using the nextInt() method. The scanner does not advance past any input.
Declaration
Following is the declaration for java.util.Scanner.hasNextInt() method
public boolean hasNextInt(int radix)
Parameters
radix − the radix used to interpret the token as an int value
Return Value
This method returns true if and only if this scanner's next token is a valid int value
Exception
IllegalStateException − if this scanner is closed
Example
The following example shows the usage of java.util.Scanner.hasNextInt() method.
package com.tutorialspoint; import java.util.*; 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); while (scanner.hasNext()) { // check if the scanner's next token is an int with a radix of 4 System.out.println("" + scanner.hasNextInt(4)); // print what is scanned System.out.println("" + scanner.next()); } // close the scanner scanner.close(); } }
Let us compile and run the above program, this will produce the following result −
false Hello false World! true 3 false + false 3.0 false = false 6
java_util_scanner.htm
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