CODEWITHSUNDEEP
java
Sûbhadeep Banerjèé
Sûbhadeep Banerjèé

Reputation: 11

scanner class package does not exist error

I was trying to compile a Java program, but it was generating an error.

Can someone tell me where I have made an error and how to fix it?

import java.io.*;
import java.util.*;
class detail
{
String name;
int age;
float salary;
void getdata()
{
    Scanner sc=new Scanner(System.in);
    System.out.println("enter name: ");
    name=new sc.next();
    System.out.println("enter age: ");
    age=new sc.nextInt();
    System.out.println("enter salary: ");
    salary=new sc.nextFloat();
}

void display()
{
    System.out.println("name: "+name);
    System.out.println("age: "+age);
    System.out.println("salary: "+salary);
}
}

class person
{
    public static void main(String arr[])
    {
        detail p=new detail();
        p.getdata();
        p.display();
    }
}

Upvotes: 0

Views: 5433

Answers (4)

DParas
DParas

Reputation: 16

Just remove the new from below lines and it will work

name=new sc.next();
System.out.println("enter age: ");
age=new sc.nextInt();
System.out.println("enter salary: ");
salary=new sc.nextFloat();

Upvotes: 0

Thomas Owens
Thomas Owens

Reputation: 116179

The issue is on lines like name=new sc.next();. You already used new to create an instance of Scanner called sc. You just need to call the instance methods on it:

import java.io.*;
import java.util.*;

class detail {
    String name;
    int age;
    float salary;

    void getdata() {
        Scanner sc = new Scanner(System.in);
        System.out.println("enter name: ");
        name = sc.next();
        System.out.println("enter age: ");
        age = sc.nextInt();
        System.out.println("enter salary: ");
        salary = sc.nextFloat();
    }

    void display() {
        System.out.println("name: " + name);
        System.out.println("age: " + age);
        System.out.println("salary: " + salary);
    }
}

class person {
    public static void main(String arr[]) {
        detail p = new detail();
        p.getdata();
        p.display();
    }
}

You do have a few other issues with your code, though, that are mainly stylistic:

// Java Code Conventions: http://www.oracle.com/technetwork/java/codeconvtoc-136057.html

// Removed import java.io.* because it wasn't used
import java.util.Scanner; // I prefer explicit imports, not *

class Detail { // Class names are typically uppercase
    // You don't have any visibility modifiers
    // https://docs.oracle.com/javase/tutorial/java/javaOO/accesscontrol.html
    private String name;
    private int age;
    private float salary;

    // I would recommend a different name. Methods of the format
    // getX() usually indicate that they return a value. These are
    // called accessor methods
    public void getData() { // Method names are usually camel case
        Scanner sc = new Scanner(System.in);
        System.out.println("enter name: ");
        name = sc.next();
        System.out.println("enter age: ");
        age = sc.nextInt();
        System.out.println("enter salary: ");
        salary = sc.nextFloat();
        // You should close input methods
        sc.close();
    }

    public void display() {
        System.out.println("name: " + name);
        System.out.println("age: " + age);
        System.out.println("salary: " + salary);
    }
}

class Person { // Classes are usually uppercase names
    public static void main(String arr[]) {
        Detail p = new Detail();
        p.getData();
        p.display();
    }
}

Upvotes: 0

Raphael Amoedo
Raphael Amoedo

Reputation: 4465

You dont need to call new sc.nextInt(). You use "new" to create new objects. Your object Scanner is created by the variable sc, so you already can use their methods.

Like that:

age = sc.nextInt();

Upvotes: 1

fabian
fabian

Reputation: 82461

You have 3 lines that contain

new sc

Remove new since sc is not a class, but a variable and you already created the Scanner object in this line:

Scanner sc=new Scanner(System.in);

The new keyword is only allowed, if a constructor call follows or in java 8 in method references, which is not the case, if you type new sc.

Upvotes: 2

Related Questions