Variables in another class

Hello there ..
I am totally new to java programming and i do need a litle help if you would be so kind.
Here goes.
I have an object that I put in a HashMap in class1.
I have class2 that calls a method in class1 asking for the HashMap value and that works fine.
What I am having problems with is to pass the value that I have in the HashMap (in this case an object of the 3 class) to class2.
I have ben trying to use a return statement and an all examples I can think of but I am not able to make this work.
Here is a part of the code in class1
//Creating an object of class Members and passing to the HashMap
public void register(String name,String adress,String cpr)
nMember = new Member(name,adress,cpr);
hM.put(cpr,nMedlem);
//Show the members listed in the HashMap
public void showMembers(String cpr)
nMember = (Member) hM.get(cpr);
System.out.println(nMember.name);
System.out.println(nMember.adress);
I need to call the showMember statement and pass the cpr key to it and get the nMember as the return value.
I am pretty sure that the solution is quite simple but I am unable to figure it out .. so any help would be great.

Hi there,
If you have instantiated an object from your Database class:
Database myDatabase = new Database();
it would then be:
myDatabase.showMembers(anyString);
(provided you are calling the method from within the same calss in which you have instantiated the object).
If you have not instantiated an object, then you would first have to define your showMembers method as static:
public static Member showMembers(String cpr){
code goes here;
and then call the method the way you suggested:
Database.showMembers(anyString);
Regards.

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hi,,
i write code for a mobile application like a tour guide..
i had create 5 class for this application, KutaBeachDictionary MIDlet class, ListMainMenu List class, ListMenuHotel List class, HotelDes01 Form class and the last Hotel class that store all information.
the problem is, i have [choose] variable in ListMenuHotel that contain getSelectedIndex() value, i want to take [choose] value from ListMenuHotel class to [index] variable in HotelDes01, so it determine the name of hotel that will display in form.but the index always 0 although i had choosen different menu from ListMenuHotel..
here is all code
in MIDlet class
import javax.microedition.lcdui.Alert;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.midlet.MIDlet;
public class KutaBeachDictionary extends MIDlet {
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        notifyDestroyed();
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        if (midletPaused) {
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        new Thread(frmLoading).start();
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    public void destroyApp(boolean unconditional) {
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}the code in ListMenuHotel
import java.io.IOException;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.List;
import javax.microedition.lcdui.Ticker;
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        for (int i = 0; i < objHotel.namaHotels.length; i++) {
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addCommand(new Command("Select", Command.OK, 0));
addCommand(new Command("Back", Command.BACK, 0));
setCommandListener(this);
public void commandAction(Command cmd, Displayable dsp) {
if (cmd == SELECT_COMMAND) {
choose = getSelectedIndex();
Display.getDisplay(run).setCurrent(run.htlDes1);
switch (cmd.getCommandType()) {
case Command.BACK:
Display.getDisplay(run).setCurrent(run.lstMenuUtama);
break;
public int getChoose() {return choose;}
private KutaBeachDictionary run;
private Image btnImage;
private Ticker tickerMenu;
private int choose;
the code in HotelDes01 Form classimport java.io.IOException;
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.ImageItem;
public class HotelDes01 extends Form implements CommandListener {
private KutaBeachDictionary run;
private int index;
private Hotel isiHotel = new Hotel();
public HotelDes01(KutaBeachDictionary run) {
super("Inna Kuta Hotel");
index = run.lstMenuHotel.getChoose(); //here is the problem..the value remain 0 althought i choose another??!!
this.run = run;
Image imgHotel = null;
String namaHotel = "\n" + isiHotel.namaHotels[index] + "\n";
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imgHotel = Image.createImage("/HotelImage/interface/htlDes1.png");
} catch (IOException e) {
append(new ImageItem(null, imgHotel, ImageItem.LAYOUT_CENTER, null));
append(namaHotel);
addCommand(new Command("Back", Command.BACK, 0));
setCommandListener(this);
public void commandAction(Command cmd, Displayable dsp) {
switch (cmd.getCommandType()) {
case Command.BACK:
Display.getDisplay(run).setCurrent(run.lstMenuHotel);
break;
can someone fix the code,, i had tried so many ways,,but completely failure.. T_T
Edited by: diaca on Mar 22, 2010 7:55 AM
Edited by: diaca on Mar 22, 2010 8:01 AM

hei bro,i had solved the problem :)
the problem is , i had constructed the form of hotelDes01 each time the program starting with this code
public class KutaBeachDictionary extends MIDlet {
    public KutaBeachDictionary() {
        //.. declaring several new object
        htlDes1 = new HotelDes01(this);
    //..another procedure like startApp, pauseApp, etc
public HotelDes01 htlDes1;
}i think if i declare this class in the beginning it never updated the index value
so i delete the code above, and i declare the htlDes1 in the listMenuHotel like this:
public class ListMenuHotel extends List implements CommandListener {
    //..several code just like before
public void commandAction(Command cmd, Displayable dsp) {
        if (cmd == cmdSelect) {
           objHotel.setChoose(getSelectedIndex()); //i change the code like this
           showInformation();
        if (cmd == cmdBack) {
            Display.getDisplay(run).setCurrent(run.lstMenuUtama);
    public void showInformation() {
        HotelDescription htlDes1 = new HotelDescription(run); //reconstruct the object in the class ListMenuHotel
        Display.getDisplay(run).setCurrent(htlDes1); //display the object
    }so the form of hotelDes01 now always reconstruct whenever user change the election in ListMenuHotel class and now index value get updated.. :D
thanks for trying to fix the code qnat..
this is my coursework, so i get to finish it ASAP..

Almost there. Can't driver doesn't recognize variables in another class?

I know this has got to be an easy fix.. but i can't figure it out.so I'll put it all here... it's a program that serves as inventory. add items. sell items. etc...
this driver will not compile while the item and inventory classes compile fine.
// Project7BDriver.java
   import java.util.Scanner;
    public class Project7BDriver
       public static void main( String[] args )
           //Start Scanner to take input
         Scanner scan = new Scanner( System.in );
           //instantiate an Inventory
         Inventory myInventory = new Inventory(3);
           //find choice and continue until user quits
         int userChoice = 0;
         while( userChoice != 4 )
            menu();
            userChoice = scan.nextInt();
       public static void menuSwitch( int choice, Inventory myInventory )
           //Start Scanner to take input
         Scanner scan = new Scanner( System.in );
         switch( choice )
              //user possibilities
            case 1:
               System.out.print("Enter name of item to be added: ");
               itemName = scan.next();
               System.out.print("Enter id of item to be added: ");
               itemId = scan.nextInt();
               System.out.print("Enter quantity of item to be added: ");
               quantityInStock = scan.nextInt();
               System.out.print("Enter suggest retail value of item to be added: $");
               suggestedRetailValue = scan.nextDouble();
               myInventory.addNewItemToInventory(itemName, itemId, quantityInStock, suggestedRetailValue);
               break;
            case 2:
               System.out.print( inventory.toString() );
               break;
            case 3:
               System.out.print("Enter id of item to be sold: ");
               identification = scan.nextInt();
               System.out.print("Enter quantity of item to be sold: ");
               sellQuantity = scan.nextInt();
               inventory.sellItem(identification, sellQuantity);
            case 4:
               System.out.println("\nGoodbye!");
               break;
            default:
               System.out.println("Sorry, invalid choice");
       public static void menu()
         System.out.println("\nInventory");
         System.out.println("*********");
         System.out.println("1: Add item to inventory");
         System.out.println("2: Print inventory");
         System.out.println("3: Sell item");
         System.out.println("4: Quit");
         System.out.print("\nEnter your choice: ");
   import java.text.NumberFormat;
    public class Inventory
        //INSTANCE VARIABLES
      private Item[] items;
      private double totalInventoryValue;
      private int numOfItemsInInventory;
      //CONSTRUCTOR
       public Inventory( int capacity )
         items = new Item[capacity];
         totalInventoryValue = 0.0;
         numOfItemsInInventory = 0;
        //METHODS
       public void increaseArraySize()
         Item[] temp = new Item[items.length + 3];
         for (int i = 0; i<items.length; i++)
            temp[i] = items;
items = temp;
public void addNewItemToInventory (String itemName, int itemId, int quantityInStock,
                                                            double suggestedRetailValue)
if (numOfItemsInInventory == items.length)
increaseArraySize();
items[numOfItemsInInventory] = new Item (itemName, itemId, quantityInStock,
                                                                 suggestedRetailValue);
numOfItemsInInventory++;
totalInventoryValue = totalInventoryValue + suggestedRetailValue*quantityInStock;
public void sellItem(int identification, int sellQuantity)
int indexItem = -1;
for (int j =0; j<numOfItemsInInventory; j++)
if(items[j].getID() == identification)
indexItem = j;
if(indexItem == -1)
System.out.println("The item you are searching for could not be found.\n " +
                         "Sale not completed.");
else
if(sellQuantity > items[indexItem].getQuantity())
System.out.println("It is not possible to buy more items than we have in stock.\n" +
                              "Sale not completed.");
else
totalInventoryValue -= items[indexItem].getValue()*sellQuantity;
numOfItemsInInventory -= sellQuantity;
public String toString()
NumberFormat fmt = NumberFormat.getCurrencyInstance();
String result = "Item ID\t\tItem Name\t\tItem Quantity\t\tRetail Value";
result += "\n-------\t\t---------\t\t-------------\t\t------------";
for( int i = 0; i < numOfItemsInInventory; i++ )
result += "\n" + items[ i ];
result += "\n\nTotal value of inventory: " + fmt.format( totalInventoryValue );
return result;
} import java.text.NumberFormat;
public class Item
     //INSTANCE VARIABLES
     //name of item
private String itemName;
     //id of item
private int itemID;
     //present quantity of item in stock
private int quantityInStock;
     //suggested price for item
private double suggestedRetailValue;
     //CONSTRUCTOR
public Item( String name, int id, int quantity, double value )
itemName = name;
itemID = id;
quantityInStock = quantity;
suggestedRetailValue = value;
     //CLASS GETTERS
public String getName()
return itemName;
public int getID()
return itemID;
public int getQuantity()
return quantityInStock;
public double getValue()
return suggestedRetailValue;
     //CLASS SETTERS
public void setName( String name )
itemName = name;
public void setID( int id )
itemID = id;
public void setQuantity( int quantity )
quantityInStock = quantity;
public void setValue( double value )
suggestedRetailValue = value;
     //TOSTRING method
public String toString()
NumberFormat fmt = NumberFormat.getCurrencyInstance();
String result = "" + itemID + "\t\t\t" + itemName + "\t\t" + quantityInStock + "\t\t\t" + fmt.format( suggestedRetailValue );
return result;

ahhh okay thanks a whole lot!!one more thing.. everything compiles.. but i can't figure a few things out.. even after debugging..when i add items to inventory.. it has null in the list of items...also.. I'm just having trouble with selling items.. here'e the code. if someone could run it and explain how to correct the errors that would be great
   import java.util.Scanner;
    public class Project7BDriver
       public static void main( String[] args )
           //Start Scanner to take input
         Scanner scan = new Scanner( System.in );
           //instantiate an Inventory
         Inventory myInventory = new Inventory(3);
           //find choice and continue until user quits
         int choice = 0;
         while( choice != 4 )
            menu();
            choice = scan.nextInt();
            menuSwitch(choice, myInventory);
       public static void menuSwitch( int choice, Inventory myInventory )
           //Start Scanner to take input
         Scanner scan = new Scanner( System.in );
         switch( choice )
              //user possibilities
            case 1:
               System.out.print("Enter name of item to be added: ");
               String itemName = scan.next();
               System.out.print("Enter id of item to be added: ");
               int itemId = scan.nextInt();
               System.out.print("Enter quantity of item to be added: ");
               int quantityInStock = scan.nextInt();
               System.out.print("Enter suggest retail value of item to be added: $");
               double suggestedRetailValue = scan.nextDouble();
               myInventory.addNewItemToInventory(itemName, itemId, quantityInStock, suggestedRetailValue);
               break;
            case 2:
               System.out.print( myInventory.toString() );
               break;
            case 3:
               System.out.print("Enter id of item to be sold: ");
               int identification = scan.nextInt();
               System.out.print("Enter quantity of item to be sold: ");
               int sellQuantity = scan.nextInt();
               myInventory.sellItem(identification, sellQ2uantity);
               break;
            case 4:
               System.out.println("\nGoodbye!");
               break;
            default:
               System.out.println("Sorry, invalid choice");
       public static void menu()
         System.out.println("\nInventory");
         System.out.println("*********");
         System.out.println("1: Add item to inventory");
         System.out.println("2: Print inventory");
         System.out.println("3: Sell item");
         System.out.println("4: Quit");
         System.out.print("\nEnter your choice: ");
   import java.text.NumberFormat;
    public class Item
        //INSTANCE VARIABLES
        //name of item
      private String itemName;
        //id of item
      private int itemID;
        //present quantity of item in stock
      private int quantityInStock;
        //suggested price for item
      private double suggestedRetailValue;
        //CONSTRUCTOR
       public Item( String name, int id, int quantity, double value )
         itemName = name;
         itemID = id;
         quantityInStock = quantity;
         suggestedRetailValue = value;
        //CLASS GETTERS
       public String getName()
         return itemName;
       public int getID()
         return itemID;
       public int getQuantity()
         return quantityInStock;
       public double getValue()
         return suggestedRetailValue;
        //CLASS SETTERS
       public void setName( String name )
         itemName = name;
       public void setID( int id )
         itemID = id;
       public void setQuantity( int quantity )
         quantityInStock = quantity;
       public void setValue( double value )
         suggestedRetailValue = value;
        //TOSTRING method
       public String toString()
         NumberFormat fmt = NumberFormat.getCurrencyInstance();
         String result = "" + itemID + "\t\t\t" + itemName + "\t\t" + quantityInStock + "\t\t\t" + fmt.format( suggestedRetailValue );
         return result;
   import java.text.NumberFormat;
    public class Inventory
        //INSTANCE VARIABLES
      private Item[] items;
      private double totalInventoryValue;
      private int numOfItemsInInventory;
      //CONSTRUCTOR
       public Inventory( int capacity )
         items = new Item[capacity];
         totalInventoryValue = 0.0;
         numOfItemsInInventory = 0;
        //METHODS
       public void increaseArraySize()
         Item[] temp = new Item[items.length + 3];
         for (int i = 0; i<items.length; i++)
            temp[i] = items;
items = temp;
public void addNewItemToInventory (String itemName, int itemId, int quantityInStock,
                                                            double suggestedRetailValue)
if (numOfItemsInInventory == items.length)
increaseArraySize();
items[numOfItemsInInventory] = new Item (itemName, itemId, quantityInStock,
                                                                 suggestedRetailValue);
numOfItemsInInventory += quantityInStock;
totalInventoryValue = totalInventoryValue + suggestedRetailValue*quantityInStock;
public void sellItem(int identification, int sellQuantity)
int indexItem = -1;
for (int j =0; j<numOfItemsInInventory; j++)
if(items[j].getID() == identification)
indexItem = j;
if(indexItem == -1)
System.out.println("The item you are searching for could not be found.\n " +
                         "Sale not completed.");
else
if(sellQuantity > items[indexItem].getQuantity())
System.out.println("It is not possible to buy more items than we have in stock.\n" +
                              "Sale not completed.");
else
totalInventoryValue -= items[indexItem].getValue()*sellQuantity;
numOfItemsInInventory -= sellQuantity;
public String toString()
NumberFormat fmt = NumberFormat.getCurrencyInstance();
String result = "Item ID\t\tItem Name\t\tItem Quantity\t\tRetail Value";
result += "\n-------\t\t---------\t\t-------------\t\t------------";
for( int i = 0; i < numOfItemsInInventory; i++ )
result += "\n" + items[ i ];
result += "\n\nTotal value of inventory: " + fmt.format( totalInventoryValue );
return result;

To use a static variable in another class,but report NullPointerException

when TableMain is running,I run testRecord so that let TableMain add a occur informatin and
happened time in a row in TableMain,but when I run testRecord,java report a NullPointerException and I dont know how to solve this problem,thanks for helping me to check my code;(error report info is in end)
import java.awt.event.*;
import javax.swing.table.*;
import java.io.*;
public class TableMain extends JFrame{
JTable table;
static OwnModel model;
String[] columnHeader={"occur","time"};
class OwnModel extends DefaultTableModel{
public OwnModel(Object[] columnNames,int numRows){
super(columnNames,numRows);
public boolean isCellEditable(int row,int column){
return false;
public TableMain(){
model=new OwnModel(columnHeader,0);
table=new JTable(model);
JScrollPane scroll=new JScrollPane(table);
JButton save=new JButton("save record");
JButton delete=new JButton("delete record");
JPanel buttons=new JPanel();
buttons.add(save);
buttons.add(delete);
JLabel sign=new JLabel("occur record");
Container cp=getContentPane();
cp.add(BorderLayout.NORTH,sign);
cp.add(BorderLayout.CENTER,scroll);
cp.add(BorderLayout.SOUTH,buttons);
this.setSize(300,500);
this.setVisible(true);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
public static void main(String[] args){
new TableMain();
import java.util.Vector;
import java.util.Calendar;
import java.text.SimpleDateFormat;
public class testRecord{
public static void main(String[] args){
SimpleDateFormat simpledf=new SimpleDateFormat("yyyy/MM/dd hh:mm:ss");
String tableName="friends";
Calendar occurtime=Calendar.getInstance();
Vector record=new Vector();
record.add("send 'desc' sql, "+"operated table is :"+tableName);
record.add(simpledf.format(occurtime.getTime()));
System.out.println("model is "+Guide.model);
System.out.println("record is "+record);
Guide.model.addRow(record);
error report:
model is null
record is [send 'desc' sql,operated table is :friends, 2004/05/26 11:39:03]
Exception in thread "main" java.lang.NullPointerException
at testRecord.main(testRecord.java:14)

but I just use this constructor once,never use twice
with same jvm;I thinks my idea is not too very badIt's a public constructor (if I'm looking in the right
place) - it could be called from anywhere. To
intialize a static variable outside the declaration,
use a static initializer:private static String whatever;static {
whatever = "whatever";
}Or simply (in this case):private static String whatever = "whatever";

Reading variable from another class

If you have two java classes both inside the same java package.
And you declared a variable for example
String bob;
bob = "hello world?"How would you make it so that the other file could then output this value
System.out.print(bob);Would you have to make the variable public and then something else?

Are you working with a main and subclass then?
Why not just write a String method and use it from the main class
public String string()
String bob = "Hello word"
return bob;
Then in your main class just create a object of the subclass
Subclass obj = new Subclass();
The just use System.out.println(obj.string());
i guess this would work also....?

Accessing variable from another class

Say I want to access String ABC from class XYZ from my main class. I have already created the object for the class I just don't know the syntax for accessing the variable.
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public class test{
public static void main(String[]args){
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public class XYZ{
     String abc = "hi";
}Edited by: aznprdgy on Nov 3, 2009 2:13 PM

No, that isn't possible.
abc is said to be a local variable. And it's only useable within method().
It's part of the job of the class Xyz to control the access to its state. As an example:
public class Test {
    public static void main(String[] args) {
        Xyz xyz = new Xyz()
        String a = xyz.getSpecialValue();
public class Xyz {
    private String a;
    public String getSpecialValue() {
        return a;
    public void method() {
        a = "hi";
}Note that a won't be reference to the string "hi" until after method() has been called.

Using variable in another class

Im currently writting a Quiz program and i want to pass the varible holding the users score from the class "All.java" to "Results.java".
Any ideas how i can do this?

You can call a method in the other class and pass the value as an argument.
You can call a setter method in the other class.
You can move the knowledge and manipulation of that variable to the local class.
You can use a helper class.
All depends on what you're trying to do really, and I know that isn't much help. I struggled with the same question for a long time when I first used Java.

How to call a variable from another class?

Greetings
I�m designing a program that is called Senior.java, and I want to design it�s menus, for simplicity in reading the code, I want to write a separate java file for each menu. For example I want a file.java, edit.java etc�.
Since I�m not a professional I�m having problems in calling the variable �bar�, that I created in senior.java,
In Senior.java I have :
JMenuBar bar = new JMenuBar();
setJMenuBar( bar );
In fileMenu.java I want to add file menu to the menu bar �bar�:
bar.add( fileMenu );
When I compile the fileMenu.java I got a �cannot resolve symbol � message, where symbol is the variable bar.
Can you please help me, knowing that i'm using SDK1.4.1?

Sun has recommendations for naming conventions. Class names should start with a capital letter. You should avoid using class names that are the same as classes provided in the SDK. Following these conventions will make it easier for people to help you. For example, you should not use file, nor should you use File. It's better to use MyFile, replacing My with something that makes sense to your application (SeniorFile?).
Also, check the Formatting Help link when posting for a desciption on how to use the code tags for posting code.
1. You need to establish references between your classes. One way is to have a constructor that has a JMenuBar argument.
2. You can not add a file to a JMenuBar because a JMenuBar adds a JMenu. I don't think you want file to extend JMenu. It may be better for file to have a JMenu.
I haven't tried to compile this code so no guarantees - just trying to show you an approach.
public class Senior extends JFrame {
   public Senior() {
      JMenuBar bar = new JMenuBar();
      MyFile file = new MyFile(bar);
//whatever else you need
public class MyFile {
   public MyFile(JMenuBar mbar) {
      JMenu menu = new JMenu();
      mbar.add(menu);

How to get variable from another class?

I have 2 classes. In first I have int variable. In second class I need to get this variable value. How I can make it?
import javax.microedition.lcdui.*;
import java.io.*;
import java.util.*;
public class ChooseLessons extends Form implements CommandListener, ItemStateListener
     ChoiceGroup lessons;     // Choice Group of preferences
     Dictionary     dictionary;
     int volumeSize;
     ChooseLessons(Dictionary dictionary)
          int volumeSize = 15;
     public void commandAction(Command c, Displayable s)
          if (c == Dictionary.BEGIN_CMD) {
               new TeachForm(dictionary, this);
import javax.microedition.lcdui.*;
import java.util.*;
public class TeachForm extends Form implements CommandListener
     Dictionary               dictionary;
     ChooseLessons          lessons;
     TeachForm(Dictionary dictionary, ChooseLessons lessons) {
          super(Locale.WORD);
          this.dictionary = dictionary;
          this.lessons = lessons;
          lessons.volumeSize(); // HERE I NEED VARIABLE VALUE FROM PREVIOUS CLASS
}Edited by: Djanym on Mar 16, 2009 4:43 PM

This is a classic problem that coders run into when trying to get their head around object-oriented programing. Since you have a class that should be modeled after a real world object, as far as that object is concerned, no one else needs to know the details of it - without asking nicely. This is where you should set up some getters and setters, which are methods that allow fields in a class to reveal themselves or allow their states to be changed in a orderly fashion.
There are a number of fields that never need to be known outside of the class. Then there are some fields you would like to let people know about, but don't want them to have the ability to change them. In the example below, there are to getter methods allow return of the necessary fields. If you made these public, there is a possibility that someone utilizing this field may change it outside of its intended use, or access them without them being ready for public consumption.
Class test {
//These private variables are only visible from the class
private int grade1 = 0;
private int grade2 = 0;
private int grade3 = 0;
private float average = 0;
private int gradeboost = 0;
//This method sets the gradeboost field to one desired by the instructor
void setboost(int boost) {
gradeboost = boost;
//These methods accept test scores and compute the average for three test
//Notice that the calculated average may not be the true average of the three test scores
//because of the possibility of gradeboost calculation being greater than 1
void test1(int score) {
         grade1 = score;
         average = (grade1 + grade2 + grade3 + gradeboost)/3;
void test2(int score) {
         grade2 = score;
         average = (grade1 + grade2 + grade3 + gradeboost)/3;
void test3(int score) {
         grade3 = score;
         average = (grade1 + grade2 + grade3 + gradeboost)/3;
//This is a getter method, which provides read access to the private variable average
//If someone just had public access to the grades and wanted to take their own average
//They would miss how the gradeboost field affects the final outcome.
float getAverage() {
    return average;
//Here is a getter method, which accepts an argument to determine which test score to return
//Notice that this isn't the true testscore, but it has been modified by the gradeboost field.
//If the user had public access to the true testscore, it wouldn't take into account the gradeboost calculation!!
//This is how a getter can control exactly what a user has access to.
float get testScore(int test) {
float testresult = 0;
if (test = 1) {
       testresult = (grade1+ gradeboost) / 3;
if (test = 2) {
       testresult = (grade2+ gradeboost) / 3;
if (test = 3) {
       testresult = (grade3+ gradeboost) / 3;
return testresult;
}

Getting a variable value from another class

Is there any way to get the value of a variable from another class? I have a file that calls another that does some checking then gives a true or false. The place the checking is done is inside an ActionListener I want to use that value in the file that calls the second. Any help would be great.

in 'another class', implement a method,
public boolean isCheckedOutOK( Object obj )
do the comparison in that method (use a suitable argument)

Use a counter from one class to another class of the same project

Hello!
In my class Book I have a variable, which is in fact a counter, counts the number of books. I need to use this same variable in another class Library, and I want to know if this is possible by any means!
Thank You very much for Your support!

Read this carefully.
Regards,

Variables in another class

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