Hey everybody,
New to the java scene and having major issues, it would be appreciated if someone could have a look at my coding and see where i'm going wrong. I have a few
- When i press the 'start new game' button the random number resets but not the program doesn't, as it just comes up with an exception error after i enter an input.
- The program wont work out the median of a sorted array, i think because if the other values are zero that affects it .. what do i need to do to fix it ??
- I've tried to work out the postion of the random number once the array has been sorted .. i think maybe its the same as the median issue !!
- I need to work out how the user can only put values in ranging from 7 - 100, if outside those values than an error message and re-entering of an input must occur ... no idea !!
- I need to work out how to exit a program by entering ' -1 ' .. no idea
Could someone please have a look an help me out with my coding issues please
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Arrays;
import javax.swing.*;
public class GuessGame extends JFrame
{
Container container;
double median;
int guesses;
int inputGuess;
int middle;
int position;
int [] test = new int [ 10 ];
private JButton newGame;
private JLabel message;
private JLabel prompt;
private JLabel numberInput;
private JTextField guessInput;
private int countGuess;
private int randomNumber;
private void generateNumber()
{
randomNumber = ( int ) ( Math.random() * 93 + 7 );
System.out.println( randomNumber );
test = new int[ 10 ];
}
public void processGuessedNumber( int usersGuess )
{
int lastDistance;
int currentDistance;
//
countGuess++;
if ( usersGuess >= 7 && usersGuess <= 100 )
{
if ( countGuess == 1 )
{
lastDistance = Math.abs( usersGuess - randomNumber );
if ( usersGuess > randomNumber )
message.setText( "Higher than correst guess." );
else
message.setText( "Lower than correct guess." );
}
else
{
currentDistance = Math.abs( usersGuess - randomNumber );
if ( usersGuess > randomNumber )
{
message.setText( "Higher than correct guess." );
lastDistance = currentDistance;
}
else if ( usersGuess < randomNumber )
{
message.setText( "Lower than correct guess." );
lastDistance = currentDistance;
}
else
{
message.setText( "Congratulations, your guess is correct!" );
guessInput.setEditable( false );
countGuess = 0;
findMiddleNumber();
}
}
}
else
{
message.setText( " Invalid Guess - Numbers must be "
+ "between 7 - 100" );
}
}
//
public void findMiddleNumber()
{
if (( guesses % 2 ) == 0)
middle = test[(( guesses + 1) / 2 )];
else
middle = test[ guesses / 2 ];
System.out.println( Arrays.toString( test ));
sort();
}
public void calculateMedian()
{
System.out.println( Arrays.toString( test ));
if (( guesses % 2 ) == 0 )
median = test[ guesses ] / 2.0;
else
median = (test[ ((guesses + 1) / 2 )] + test[ guesses / 2]) / 2.0;
findGuessedNumbers();
}
public void sort()
{
int insert;
for( int next = 1; next < test.length; next++)
{
insert = test[ next ];
int moveItem = next;
while( moveItem > 0 && test[ moveItem -1 ] > insert )
{
test[ moveItem ] = test[ moveItem -1 ];
moveItem--;
}
test[ moveItem ] = insert;
}
calculateMedian();
}
public String toString()
{
return Arrays.toString( test );
}
public void findGuessedNumbers()
{
for ( int guesses = 0; guesses < test.length; guesses++ )
{
if (( test[ guesses ]) == randomNumber );
else
System.out.println( " " );
}
finalOutput();
} public GuessGame()
{
//
super( "Play Guess A Number Game Version 2.1" );
setLayout( new FlowLayout() );
//starts guesses count to 0
countGuess = 0;
//information for user to enter a number between 7 and 100
prompt = new JLabel( "A random number between 7 and 100 has been"
+ " selected." );
//prompts the user to input a number and press enter
numberInput = new JLabel( "Write your number and press enter key: ");
//text field for user inputs
guessInput = new JTextField( 5 );
guessInput.addActionListener( new GuessHandler() );
//result of guessed numbers
message = new JLabel( "The result will be shown here." );
//button to start new game
newGame = new JButton( "Start New Game" );
newGame.addActionListener( new ActionListener()
{
@Override
//handle test event
public void actionPerformed( ActionEvent event )
{
//resets text field to null
guessInput.setText(" ");
guessInput.setEditable(true);
//generate random number method call
generateNumber();
}//end method actionPerformed
});
container = getContentPane(); //
container.add( prompt); //
container.add( numberInput ); //
container.add( guessInput ); //
container.add( message ); //
container.add( newGame ); //
//sets frame size layout
setSize( 380, 150 );
setVisible( true );
//generate random number method call
generateNumber();
}
class GuessHandler implements ActionListener
{
@Override
public void actionPerformed ( ActionEvent event )
{
do
{
if ( inputGuess != randomNumber )
{
inputGuess = Integer.parseInt( guessInput.getText() );
test[guesses] = inputGuess;
processGuessedNumber( inputGuess );
guesses++;
}
else
test[guesses] = inputGuess;
if ( inputGuess != randomNumber )
{
break;
}
}
while ( inputGuess != randomNumber );
}
}
public void finalOutput()
{
JOptionPane.showMessageDialog( null,"Congratulations, your guess "
+ "is correct." + "\n\n1. Middle number from all guessed "
+ "numbers by the user is: " + middle + "\n\r2. Median "
+ " value of all guessed numbers by the user is: "
+ median + "\n\r3. A position (array index) of correctly "
+ "guessed number in sorted array is: " + position,
"Final Output", JOptionPane.PLAIN_MESSAGE );
}
public static void main( String [] args )
{
GuessGame guessGame = new GuessGame();
guessGame.setDefaultCloseOperation( EXIT_ON_CLOSE );
}
}
