Thread: Beginner Java Help !

Hey,
I was trying to play around a little bit after learning creating multiple classes and stuff.However,i encountered a strange problem with reading a value from the user and then storing it in a variable.The usual way i do it is

Scanner variableName=new Scanner(System.in);
System.out.println(variableName.nextLine());

.But when i trying to print the contents of the variable "variableName" the compiler throws a lot of errors .I am attaching how i have tried that out in my code

import java.util.Scanner;
class laptop{
	private String modelNumber;
	private boolean hasFan;
	private float ramSpeed;
	protected int numCores;
	//private String input;
	//public int num;
	private boolean newInput;
	public laptop(String modelNumber,boolean hasFan,float ramSpeed,int numCores){
		this.modelNumber=modelNumber;
		this.hasFan=hasFan;
		this.ramSpeed=ramSpeed;
		this.numCores=numCores;
		}
 
	public void getInfo(){
		System.out.print("This Laptop is "+modelNumber+" model of laptop\n"+
						 "Fan :"+hasFan+" Number of Cores :"+numCores+
						 "Ram Speed :"+ramSpeed);
						 }
	public void setInfo(){
		System.out.println("What do you want to modify?");//Assuming user types no:1 for changing the status of hasFan
		Scanner num=new Scanner(System.in);
		System.out.println(num.nextInt());
		switch(num) {
			case 1:
			{
			System.out.println("Enter the desired status");
			Scanner newInput=new Scanner(System.in);
			System.out.println(newInput.nextBoolean());
			System.out.println(newInput);
			this.hasFan=newInput;
			break;
			}
		}
 
		}
	}

And the main program is

public class Implement{
	public static void main(String[] args){
	laptop objectLaptop=new laptop("G580",true,3.2f,8);
	//apple objectApple=new apple(true);
	objectLaptop.getInfo();
	objectLaptop.setInfo();
	}
	}

As you can see this is not a very functional code but only to cement my learning of the concept.Without the setInfo() in the laptop class the program functions as desired but i intend to ask the user if he wants to modify something and then reflect the same.

Yeah,Thanks that helped a lot.It now works fine.But i wanted to add more functionality by asking the user if he wanted to modify them once more,so i added a do..while loop.However when i wanted to scan a char from the user i found out that the method nextChar() does not exist.Could you tell me on how to scan a char input from the user ?

import java.util.*;
class laptop{
	private String modelNumber;
	private boolean hasFan;
	private float ramSpeed;
	protected int numCores;
	private int newNum;
	private boolean newInput;
	public laptop(String modelNumber,boolean hasFan,float ramSpeed,int numCores){
		this.modelNumber=modelNumber;
		this.hasFan=hasFan;
		this.ramSpeed=ramSpeed;
		this.numCores=numCores;
		}
 
	public void getInfo(){
		System.out.print("\nThis Laptop is "+modelNumber+" model of laptop\n"+
						 "Fan :"+hasFan+" \nNumber of Cores :"+numCores+
						 "\nRam Speed :"+ramSpeed+"\n");
						 }
	public void setInfo(){
	do{
		System.out.println("What do you want to modify?\n1.Presence of Fan\n2.Number of Cores.");
		Scanner num=new Scanner(System.in);
		newNum=num.nextInt();
 
		switch(newNum) {
			case 1:
			{
			System.out.println("Enter the desired status");
			Scanner newInput=new Scanner(System.in);
	        this.hasFan=newInput.nextBoolean();
		    break;
			}
			case 2:
			{
			System.out.println("Enter the desired status");
			Scanner newInputCores=new Scanner(System.in);
			this.numCores=newInputCores.nextInt();
			break
			}
			default:
			{
			System.out.println("\nPlease enter a proper value");
			System.out.println("Wanna try again (Select y/n) ?");
			}
		}
	}
		System.out.println("Wanna modify again (y/n)?");
		char newChar=            //Scan newchar here
		while
 
		}
	}

--- Update ---

The error was because is tried to switch a Scanner before converting it into a int data type