Java Scanner - hasNextByte() Method
The java.util.Scanner.hasNextByte() method returns true if the next token in the scanner's input can be interpreted as a byte value in the specified radix using the nextByte() method. The scanner does not advance past any input.
Syntax
public boolean hasNextByte(int radix)
Parameters
radix |
Specify the radix used to interpret the token. |
Return Value
Returns true if and only if the scanner's next token is a valid byte value.
Exception
Throws IllegalStateException, if the scanner is closed.
Example:
In the example below, the java.util.Scanner.hasNextByte() method is used to check whether the scanner's next token is a valid byte value or not in the specified radix.
import java.util.*;
public class MyClass {
public static void main(String[] args) {
//String to scan
String MyString = "Hello World 10 + 20 = 30.0";
//creating a Scanner
Scanner MyScan = new Scanner(MyString);
while(MyScan.hasNext()) {
//check if the next token is a byte with radix 16
//if yes, prints byte value
if(MyScan.hasNextByte(16))
System.out.println("Byte value is: "+ MyScan.nextByte(16));
//if the next token is not a byte
else
System.out.println("No Byte Value found: "+ MyScan.next());
}
//close the scanner
MyScan.close();
}
}
The output of the above code will be:
No Byte Value found: Hello No Byte Value found: World Byte value is: 16 No Byte Value found: + Byte value is: 32 No Byte Value found: = No Byte Value found: 30.0
❮ Java.util - Scanner
