EasyIn class?

Question

;-) It is a start, I have many battles to face and attack, my lecturer has thrown up this class "EasyIn()" and I don't know where it is to be placed. It controls the size of the plane list. All I know is that it is mentioned in the remove method (AirplaneListTester)
int plane = EasyIn.getInt();
this code probably checks the position of the plane in the list.
placed in the main method of the AirplaneListTester
int size;
size = EasyIn.getInt();
The EasyIn class is :
// EasyIn.java
import java.io.*;
public abstract class EasyIn
static String s = new String();
static byte[] b = new byte[512];
static int bytesRead = 0;
public static String getString()
boolean ok = false;
while(!ok)
try
bytesRead = System.in.read(b);
s = new String(b,0,bytesRead-1);
s=s.trim();
ok = true;
catch(IOException e)
System.out.println(e.getMessage());
     return s;
public static int getInt()
int i = 0;
boolean ok = false;
while(!ok)
try
bytesRead = System.in.read(b);
s = new String(b,0,bytesRead-1);
i = Integer.parseInt(s.trim());
ok = true;
catch(NumberFormatException e)
System.out.println("Make sure you enter an integer");
catch(IOException e)
System.out.println(e.getMessage());
return i;
public static byte getByte()
byte i = 0;
boolean ok = false;
while(!ok)
try
bytesRead = System.in.read(b);
s = new String(b,0,bytesRead-1);
i = Byte.parseByte(s.trim());
ok = true;
catch(NumberFormatException e)
System.out.println("Make sure you enter a byte");
catch(IOException e)
System.out.println(e.getMessage());
return i;
public static short getShort()
short i = 0;
boolean ok = false;
while(!ok)
try
bytesRead = System.in.read(b);
s = new String(b,0,bytesRead-1);
i = Short.parseShort(s.trim());
ok = true;
catch(NumberFormatException e)
System.out.println("Make sure you enter a short integer");
catch(IOException e)
System.out.println(e.getMessage());
return i;
public static long getLong()
long l = 0;
boolean ok = false;
while(!ok)
try
bytesRead = System.in.read(b);
s = new String(b,0,bytesRead-1);
l = Long.parseLong(s.trim());
ok = true;
catch(NumberFormatException e)
System.out.println("Make surre you enter a long integer");
catch(IOException e)
System.out.println(e.getMessage());
return l;
public static double getDouble()
double d = 0;
boolean ok = false;
while(!ok)
try
bytesRead = System.in.read(b);
s = new String(b,0,bytesRead-1);
d = (Double.valueOf(s.trim())).doubleValue();
ok = true;
catch(NumberFormatException e)
System.out.println("Make sure you enter a decimal number");
catch(IOException e)
System.out.println(e.getMessage());
return d;
public static float getFloat()
float f = 0;
boolean ok = false;
while(!ok)
try
bytesRead = System.in.read(b);
s = new String(b,0,bytesRead-1);
f = (Float.valueOf(s.trim())).floatValue();
ok = true;
catch(NumberFormatException e)
System.out.println("Make sure you enter a decimal number");
catch(IOException e)
System.out.println(e.getMessage());
     return f;
public static char getChar()
char c = ' ';
boolean ok = false;
while(!ok)
try
bytesRead = System.in.read(b);
s = new String(b,0,bytesRead-1);
if(s.trim().length()!=1)
System.out.println("Make sure you enter a single character");
else
c = s.trim().charAt(0);
ok = true;
catch(IOException e)
System.out.println(e.getMessage());
return c;
public static void pause()
boolean ok = false;
while(!ok)
try
System.in.read(b);
ok = true;
catch(IOException e)
System.out.println(e.getMessage());
public static void pause(String messageIn)
boolean ok = false;
while(!ok)
try
System.out.print(messageIn);
System.in.read(b);
ok = true;
catch(IOException e)
System.out.println(e.getMessage());
The code I have made so far is this:
import javax.swing.JOptionPane; //indicates that the compiler should load class JOptionPane for use in this application.
public class AirplaneListTester
     public static class AirplaneList
     //Attributes for the AirplaneList
     private String flight = "No plane" ; //Airplane's name
     private int total = 0;     //initial total
     private boolean Empty = true; //initially the list is empty
     private boolean     Full = false; //The list initially has no entries therefore it is not full
     // Constructor method
     public AirplaneList()
          total = 0;
//     public void add(String Airplane)
//          flight = Airplane; // The airplane object will be "flight"
//     }     //add()
//     public void remove(int inti)
//          total = inti;
//     }     //remove()
     public boolean isEmpty()
          Empty = true;
          Full = false;
          return Empty;
     public boolean isFull()
          Empty = false;
          Full = true;
          return Full;
//     public void item(int inti)
//          total = inti;
//          System.out.println(flight+ "is number ");
//          System.out.println(total+ "");
     public void Total()
          System.out.println(total+ "planes on the list");
          return;
//     public void getInt()
     public static void main (String[] args)
throws java.io.IOException
          char choice; //Words choice and size are the names of variables
     //     int size; //This declaration specifies that the variable are of data type char and int
     //     size = EasyIn.getInt(); // Converts size from int to something?
     //Char - a variable that may only hold a single lowercase letter, a single uppercase letter, a single digit or a special character //(such as x, $, 7 and *)
     AirplaneList plane = new AirplaneList(); // Declare AirplaneList variables
     // The code below creates a dialog box for the user to input a choice
     String inputcode;
     inputcode = JOptionPane.showInputDialog("A: add an airplane from the list\n" +
                              "B: remove an airplane from the list\n" +
                              "C: check if the list is empty\n" +
                              "D: check if the list is full\n" +
                              "E: display the list\n" +
                              "F: quit\n" );
     //The null first argument indicates that the message dialog will appear in the center of the screen. The 2nd is the message to display
do
     // get choice from user
     choice = inputcode.toUpperCase().charAt(0);
          System.out.println();
          //process menu options
          switch(choice)
               case 'A':               
                    JOptionPane.showMessageDialog(null, "Case " + inputcode);
                    //option1(plane); // Checks if plane is empty
                    break;     //done processing case
               case 'B':
                    JOptionPane.showMessageDialog(null, "Case " + inputcode);
                    //option2(plane); // Checks if plane is empty
                    break;     //done processing case
               case 'C':
                    option3(plane); // Checks if plane is empty
                    break;     //done processing case
               case 'D':
                    option4(plane); // Checks if plane is full
                    break;     //done processing case
               case 'E':
                    JOptionPane.showMessageDialog(null, "Case " + inputcode);
                    //option5(plane); // Checks if plane is empty
                    break;     //done processing case
               case 'F':
                    JOptionPane.showMessageDialog(null, "You have chosen to quit the program");
                    break;     //done processing case
               default:
                    JOptionPane.showMessageDialog(null, "Invalid entry!, Please choose another option");
                    if (choice!= 'A'||
          choice!= 'B'||      
                    choice!= 'C'||
                    choice!= 'D'||
                    choice!= 'E'||
                    choice!= 'F');
                    inputcode = JOptionPane.showInputDialog("A: add an airplane from the list\n" +
                              "B: remove an airplane from the list\n" +
                              "C: check if the list is empty\n" +
                              "D: check if the list is full\n" +
                              "E: display the list\n" +
                              "F: quit\n" );
                    break;     //done processing case
     }while (choice!= 'F' ); //end AirplaneList tester
System.exit(0); //Terminates the program
//add Airplane
     public static void option1(AirplaneList plane)
          String flight;
     flight = JOptionPane.showInputDialog("Please enter airplane filght number" );
          //create an Airplane object to add to list          Airplane flight = new Airplane();
          //add string to list if the list is not full
          //access the 'add(Airplane)' method from the AirplaneList class;
          //if the list is full, return a statement to the user indicating that no more plane can be added onto the list
     //remove airplane
     public static void option2(AirplaneList plane)
          //get position of item
     string enterpos;
     enterpos = JOptionPane.showInputDialog("Please enter position to remove" );
          System.out.print(":")
          int plane = Easyln.getint();
          // delete item if it exists
          //access the 'remove(Airplane)' method from the AirplaneList class;
          //if the user enter an invalid number for the position, returen a statement
          //indicating that there is no such posititon.
     //check if empty
     public static void option3(AirplaneList plane)
          if (plane.isEmpty())
               JOptionPane.showMessageDialog(null, "The list is empty");
          else
               JOptionPane.showMessageDialog(null, "list is not empty" );
     //check if full
     public static void option4(AirplaneList plane)
          if (plane.isFull())
               JOptionPane.showMessageDialog(null, "list is full" );
          else
               JOptionPane.showMessageDialog(null, "list is not full" );
/*     //display list
     public static void option5 (AirplaneList plane)
          if (plane.isEmpty())     //no need to display if list is empty
               JOptionPane.showMessageDialog(null, "list is empty" );
          else
               JOptionPane.showMessageDialog(null, "Airplanes in list are" );
               //loop through list

Answer 1

;-) It is a start, I have many battles to face and
attack, my lecturer has thrown up this class
"EasyIn()" and I don't know where it is to be placed.
It controls the size of the plane list. Not quite. It is simply a utility class to help with reading user input in non-gui applications.
Just place the class file somewhere in your classpath.