Java Scanner hasNextLine() Method

The hasNextLine() is a method of Java Scanner class which is used to check if there is another line in the input of this scanner. It returns true if it finds another line, otherwise returns false.

Syntax

Following is the declaration of hasNextLine() method:

Parameter

This method does not accept any parameter.

Returns

The hasNextLine() method returns true if and only if this scanner has another line of input.

Exceptions

IllegalStateException

Compatibility Version

Java 1.5 and above

Example 1

import java.util.*;
public class ScannerHasNextLineExample1 {  
    public static void main(String args[]){   	
    	  String str = "Facebook.com \n 1 + 1 = 2.0 \n JavaTpoint.com ";
        Scanner scanner = new Scanner(str);
        //Print the next line
        System.out.println(scanner.nextLine());
        //Check if there is a next line again
        System.out.println(scanner.hasNextLine());
        System.out.println(scanner.nextLine());
        //Check if there is a next line again
        System.out.println(scanner.hasNextLine());
        System.out.println(scanner.nextLine());
        //Check if there is a next line again
        System.out.println(scanner.hasNextLine());
        scanner.close();
	  }  
}

Output:

Facebook.com 
true
 1 + 1 = 2.0 
true
 JavaTpoint.com 
false

Example 2

import java.util.*;
import java.util.regex.MatchResult;
public class ScannerHasNextLineExample2 {  
	public static void main(String[] args) {
        Scanner s = new Scanner("Shortest path(3)::RV3280-RV0973C-RV2888C"+ "\nShortest path(2)::RV3280-RV2502C"+ "\nShortest path(3)::RV3280-RV2501C-RV1263"+ "\nShortest path(3)::RV2363-Rv3285-RV3280");
        while (s.hasNextLine()) {
        	//Look for this pattern at each line
            s.findInLine("Shortest path\\((\\d+)\\)::(\\w+).*-(\\w+)");
            //Results from
            MatchResult result = s.match(); 
            for (int i = 1; i <= result.groupCount(); i++) {
                System.out.println(result.group(i));
            }
            s.nextLine();
        }
        s.close();       
        }
}

Output:

3
RV3280
RV2888C
2
RV3280
RV2502C
3
RV3280
RV1263
3
RV2363
RV3280

Example 3

import java.io.File;
import java.io.FileNotFoundException;
import java.util.*;
public class ScannerHasNextLineExample3 {  
	public static void main(String[] args) throws FileNotFoundException {
		//Declare File object
		File file = new File("/home/javatpoint/Desktop/ABHISHEK/AngularJS/Index/abc.txt");
		//Create scanner object
		Scanner scan = new Scanner(file);
		//Iterate through the file line by line
		while(scan.hasNextLine()){
			//Print the token
			System.out.println(scan.next());
		}
		scan.close();
	}
}

Output:

hasNextLine
public
boolean
hasNextLine()

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