Java Scanner - hasNextBigInteger() Method
The java.util.Scanner.hasNextBigInteger() method returns true if the next token in the scanner's input can be interpreted as a BigInteger value in the default radix using the nextBigInteger() method. The scanner does not advance past any input.
Syntax
public boolean hasNextBigInteger()
Parameters
No parameter is required.
Return Value
Returns true if and only if the scanner's next token is a valid BigInteger value.
Exception
Throws IllegalStateException, if the scanner is closed.
Example:
In the example below, the java.util.Scanner.hasNextBigInteger() method is used to check whether the scanner's next token is a valid BigInteger value or not.
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 BigInteger
//if yes, prints BigInteger value
if(MyScan.hasNextBigInteger())
System.out.println("BigInteger value is: "+ MyScan.nextBigInteger());
//if the next token is not a BigInteger
else
System.out.println("No BigInteger Value found: "+ MyScan.next());
}
//close the scanner
MyScan.close();
}
}
The output of the above code will be:
No BigInteger Value found: Hello No BigInteger Value found: World BigInteger value is: 10 No BigInteger Value found: + BigInteger value is: 20 No BigInteger Value found: = No BigInteger Value found: 30.0
❮ Java.util - Scanner
