how to Loop the following program as per length

Question

I have added a for loop in size of 3 it should scan for 3 times but it is scanning for 4 time.for size of 4 its scanning for 6 times help me out.

public class Control {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        List<Student> studs = new ArrayList<Student>();
       for (int i = 1;i < 3;i++) { //Here the for loop
        System.out.println("Enter age and name :");
        Student stu1 = new Student(sc.nextInt(),sc.nextLine());
        System.out.println("Enter age and name :");
        Student stu2 = new Student(sc.nextInt(),sc.nextLine());

        studs.add(stu1);
        studs.add(stu2);

        Collections.sort(studs,new StudAge());
       }
        for(Student stud : studs) {
            System.out.println(stud);
        }


    }

}

This is almost certainly due to the way you are using your scanner. — Tim Biegeleisen, Jun 21 '18 at 02:40

score 1 · Answer 1 · answered Jun 21 '18 at 02:47

    import java.awt.List;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;

public class Test {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        ArrayList<Student> studs = new ArrayList<Student>();

        for (int i = 1;i < 3;i++) { //Here the for loop
            System.out.println("Enter age and name :");
            int age = sc.nextInt();
            //nextInt does not account for the enter that you press when you submit the int so you have to catch the unused enter keystroke         
            sc.nextLine();
            String name = sc.nextLine();
            Student stu1 = new Student(age, name);

            age = sc.nextInt();
            sc.nextLine();
            name = sc.nextLine();
            System.out.println("Enter age and name :");
            Student stu2 = new Student(age, name);

            studs.add(stu1);
            studs.add(stu2);

            Collections.sort(studs,new StudAge());
        }
        for(Student stud : studs) {
            System.out.println(stud);
        }


    }

}

nextInt does not account for the enter that you press when you submit the int so you have to catch the unused enter keystroke

how to Loop the following program as per length

1 Answers1