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- Java.util - Scanner
- Java.util - ServiceLoader
- Java.util - SimpleTimeZone
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- Java.util - StringTokenizer
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- Java.util - TimeZone
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- Java.util Package Extras
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Java.util.Scanner.hasNextFloat() Method
Description
The java.util.Scanner.hasNextFloat() method returns true if the next token in this scanner's input can be interpreted as a float value using the nextFloat() method. The scanner does not advance past any input.
Declaration
Following is the declaration for java.util.Scanner.hasNextFloat() method
public boolean hasNextFloat()
Parameters
NA
Return Value
This method returns true if and only if this scanner's next token is a valid float value
Exception
IllegalStateException − if this scanner is closed
Example
The following example shows the usage of java.util.Scanner.hasNextFloat() method.
package com.tutorialspoint; import java.util.*; public class ScannerDemo { public static void main(String[] args) { String s = "Hello World! 3 + 3.0 = 6 "; Float f = 3.12345f; s = s + f; // create a new scanner with the specified String Object Scanner scanner = new Scanner(s); // assign locale as US to recognize float numbers in a string scanner.useLocale(Locale.US); while (scanner.hasNext()) { // check if the scanner's next token is a float System.out.println("" + scanner.hasNextFloat()); // 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 + true 3.0 false = true 6 true 3.12345
java_util_scanner.htm
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