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Thread: Cannot get buttons working in GUI program

  1. #1
    Junior Member Yeshibo's Avatar
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    Default Cannot get buttons working in GUI program

    I've been trying to create a personal GUI trivia program that chooses a random question from a database of 60 questions and asks you 30 questions total with a possibility of 4 answers for each question. Here is my full code:

    import java.awt.*;
    import java.awt.event.*;
    import javax.swing.*;
    import javax.swing.event.*;
    import java.util.Random;
     
    import java.io.*;
    import java.util.*;
     
    import java.awt.Frame;
    import java.awt.TextArea;
    import java.awt.TextField;
    import java.awt.BorderLayout;
     
    import java.awt.event.WindowAdapter;
    import java.awt.event.WindowEvent;
    import java.awt.event.WindowListener;
     
    public class Game  extends JFrame
    {
    	//SELECTIONS
     
        JButton jbtFirstAnswer = new JButton("First Answer");
        JButton jbtSecondAnswer = new JButton("Second Answer");
        JButton jbtThirdAnswer = new JButton("Third Answer");
        JButton jbtFourthAnswer = new JButton("Fourth Answer");
     
        //QUESTION PANE
        JLabel jlbHeader = new JLabel("Question: ");
        JLabel jlbAnswerOne = new JLabel("A: ");
        JLabel jlbAnswerTwo = new JLabel("B: ");
        JLabel jlbAnswerThree = new JLabel("C: ");
        JLabel jlbAnswerFour = new JLabel("D: ");
     
        JTextField jtfQuestion = new JTextField(40);
        JTextField jtfAnswerOne = new JTextField(20);
        JTextField jtfAnswerTwo = new JTextField(20);
        JTextField jtfAnswerThree = new JTextField(20);
        JTextField jtfAnswerFour = new JTextField(20);
     
     
        public Game()throws IOException
        {
     
     
        	//MAKE TEXT BOXES UNEDITABLE
        	jtfQuestion.setEditable(false);
        	jtfAnswerOne.setEditable(false);
        	jtfAnswerTwo.setEditable(false);
        	jtfAnswerThree.setEditable(false);
        	jtfAnswerFour.setEditable(false);
     
        	//START QUESTIONS
     
    		JPanel questionsPanel = new JPanel();
        	questionsPanel.setLayout(new FlowLayout());
        	questionsPanel.add(jlbHeader, BorderLayout.NORTH);
        	questionsPanel.add(jtfQuestion);
     
    		//END QUESTIONS
     
    		//START ANSWERS
     
        	JPanel answerPanelOne = new JPanel();
        	answerPanelOne.setLayout(new FlowLayout());
        	answerPanelOne.add(jlbAnswerOne);
        	answerPanelOne.add(jtfAnswerOne);
     
        	JPanel answerPanelTwo = new JPanel();
        	answerPanelTwo.setLayout(new FlowLayout());
        	answerPanelTwo.add(jlbAnswerTwo);
        	answerPanelTwo.add(jtfAnswerTwo);
     
        	JPanel answerPanelThree = new JPanel();
        	answerPanelThree.setLayout(new FlowLayout());
        	answerPanelThree.add(jlbAnswerThree);
        	answerPanelThree.add(jtfAnswerThree);
     
        	JPanel answerPaneFour = new JPanel();
        	answerPaneFour.setLayout(new FlowLayout());
        	answerPaneFour.add(jlbAnswerFour);
        	answerPaneFour.add(jtfAnswerFour);
     
        	//ANSWER PANEL TOTAL
        	JPanel answerMainPane = new JPanel();
        	answerMainPane.setLayout(new GridLayout(4,1));
        	answerMainPane.add(answerPanelOne);
        	answerMainPane.add(answerPanelTwo);
        	answerMainPane.add(answerPanelThree);
        	answerMainPane.add(answerPaneFour);
     
        	//START SELECTIONS
     
        	JPanel choiceOnePanel = new JPanel();
        	choiceOnePanel.setLayout(new BorderLayout());
        	choiceOnePanel.add(jbtFirstAnswer);
     
        	JPanel choiceTwoPanel = new JPanel();
        	choiceTwoPanel.setLayout(new BorderLayout());
        	choiceTwoPanel.add(jbtSecondAnswer);
     
        	JPanel choiceThreePanel = new JPanel();
        	choiceThreePanel.setLayout(new BorderLayout());
        	choiceThreePanel.add(jbtThirdAnswer);
     
        	JPanel choiceFourthPanel = new JPanel();
        	choiceFourthPanel.setLayout(new BorderLayout());
        	choiceFourthPanel.add(jbtFourthAnswer);
     
        	JPanel choicePanel = new JPanel();
        	choicePanel.setLayout(new BorderLayout());
        	choicePanel.add(choiceOnePanel, BorderLayout.NORTH);
        	choicePanel.add(choiceTwoPanel, BorderLayout.CENTER);
        	choicePanel.add(choiceThreePanel, BorderLayout.SOUTH);
        	choicePanel.add(choiceFourthPanel);
     
        	choicePanel.setLayout(new FlowLayout());
        	add(choicePanel);
        	add(questionsPanel);
     
    		//END SELECTIONS
     
     
        	JPanel mainPanel = new JPanel();
        	mainPanel.setLayout(new FlowLayout());
        	add(questionsPanel, BorderLayout.NORTH);
        	add(answerMainPane, BorderLayout.CENTER);
        	add(choicePanel, BorderLayout.SOUTH);
     
        	//QUESTION DATABASE
     
        	//Fills out the questionDatabase array by going through a for loop 30 times..
        	//First randomly generates 1 - 60 and chooses a question coorresponding to that number
        	//by using a switch statement...
        	//Lots of coding but couldn't find a better way.
    		//Also sets up answer variables
     
     
    				Scanner sf = new Scanner(new File ("answerKey.in"));
    				String answerDatabase[] = new String[240]; //declare more than we need
    				for(int j = 0; j < 240; j++)
    					{
    						answerDatabase[j] = sf.nextLine();
    					}
     
    Random randomGenerator = new Random();
     
    		int answerSet = -5;
     
    		String answerOne = "";
    		String answerTwo = "";
    		String answerThree = "";
    		String answerFour = "";
     
        	String questionDatabase[] = new String[61];
     
        	int amountCorrect = 0;
        	int amountWrong = 0;
     
        	int correctAnswer = 0;
        	int correctDatabase[] = new int[61];
        	int answerSetDatabase[] = new int[61];
     
     
     
        	for(int j = 0; j < 30; j++)
        		{
    				 int randomInt = randomGenerator.nextInt(60);
    				 switch(randomInt + 1)
    				 		{
    				 			case 1:
    				 				questionDatabase[j] = "Who was the first president of the United States?";
    				 				answerSetDatabase[j] = 0;
    				 				correctAnswer = 2;
    				 				correctDatabase[j] = 2;
    				 				break;
     
    				 			case 2:
    				 				questionDatabase[j] = "Which of the following is a letter?";
    				 				answerSetDatabase[j] = 4;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 3:
    				 				questionDatabase[j] = "Which of these people play ice hockey?";
    				 				answerSetDatabase[j] = 8;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 4:
    				 				questionDatabase[j] = "Which of these is a soda?";
    				 				answerSetDatabase[j] = 12;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 5:
    				 				questionDatabase[j] = "Which of these is a professional sport?";
    				 				answerSetDatabase[j] = 16;
    				 				correctAnswer = 2;
    				 				correctDatabase[j] = 2;
    				 				break;
     
    				 			case 6:
    				 				questionDatabase[j] = "As of April 2012, how many pokemon are there?";
    				 				answerSetDatabase[j] = 20;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 7:
    				 				questionDatabase[j] = "Do you like Programming?";
    				 				answerSetDatabase[j] = 24;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 8:
    				 				questionDatabase[j] = "Who's the best pony?";
    				 				answerSetDatabase[j] = 28;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 9:
    				 				questionDatabase[j] = "Which of these is an actual video game?";
    				 				answerSetDatabase[j] = 32;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 10:
    				 				questionDatabase[j] = "What does DSL mean in Networking?";
    				 				answerSetDatabase[j] = 36;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 11:
    				 				questionDatabase[j] = "How many permanent teeth do humans have?";
    				 				answerSetDatabase[j] = 40;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 12:
    				 				questionDatabase[j] = "Which of these is not in the digestive system?";
    				 				answerSetDatabase[j] = 44;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 13:
    				 				questionDatabase[j] = "Who has won the most Stanley Cups?";
    				 				answerSetDatabase[j] = 48;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 14:
    				 				questionDatabase[j] = "Who has won the most Stanley Cups?";
    				 				answerSetDatabase[j] = 52;
    				 				correctAnswer = 2;
    				 				correctDatabase[j] = 2;
    				 				break;
     
    				 			case 15:
    				 				questionDatabase[j] = "Who holds the record for most goals in one NHL season?";
    				 				answerSetDatabase[j] = 56;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 16:
    				 				questionDatabase[j] = "How many keys are on a piano?";
    				 				answerSetDatabase[j] = 60;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 17:
    				 				questionDatabase[j] = "What was the first animal cloned?";
    				 				answerSetDatabase[j] = 64;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 18:
    				 				questionDatabase[j] = "What is the softest mineral?";
    				 				answerSetDatabase[j] = 68;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 19:
    				 				questionDatabase[j] = "What is the name of the scale that measures the hardness of minerals?";
    				 				answerSetDatabase[j] = 72;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 20:
    				 				questionDatabase[j] = "How many countries are on the equator?";
    				 				answerSetDatabase[j] = 76;
    				 				correctAnswer = 2;
    				 				correctDatabase[j] = 2;
    				 				break;
     
    				 			case 21:
    				 				questionDatabase[j] = "The continent of Africa is made up of how many countries?";
    				 				answerSetDatabase[j] = 80;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 22:
    				 				questionDatabase[j] = "What is the best selling instrument in the world?";
    				 				answerSetDatabase[j] = 84;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 23:
    				 				questionDatabase[j] = "What band was once called the 'Golden Gate Rhythm Section'?";
    				 				answerSetDatabase[j] = 88;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 24:
    				 				questionDatabase[j] = "What is a 'Sea Wasp'?";
    				 				answerSetDatabase[j] = 92;
    				 				correctAnswer = 2;
    				 				correctDatabase[j] = 2;
    				 				break;
     
    				 			case 25:
    				 				questionDatabase[j] = "Which country has not fought a war since 1814?";
    				 				answerSetDatabase[j] = 96;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 26:
    				 				questionDatabase[j] = "What's the most common non-contagious disease in the world?";
    				 				answerSetDatabase[j] = 100;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 27:
    				 				questionDatabase[j] = "Which country owns the island of Bermuda?";
    				 				answerSetDatabase[j] = 104;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 28:
    				 				questionDatabase[j] = "Which is the only lake in the world which has sharks?";
    				 				answerSetDatabase[j] = 108;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 29:
    				 				questionDatabase[j] = "Who said these words - 'I am the president of United States and I am not going to eat any more broccoli'.";
    				 				answerSetDatabase[j] = 112;
    				 				correctAnswer = 2;
    				 				correctDatabase[j] = 2;
    				 				break;
     
    				 			case 30:
    				 				questionDatabase[j] = "Which vehicle was invented to circumvent trench warfare?";
    				 				answerSetDatabase[j] = 116;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 31:
    				 				questionDatabase[j] = "What does the abbreviation GUI stand for?";
    				 				answerSetDatabase[j] = 120;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 32:
    				 				questionDatabase[j] = "Who was the first African-American player to join Major League Baseball?";
    				 				answerSetDatabase[j] = 124;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 33:
    				 				questionDatabase[j] = "In 1993 which sport did Michael Jordan give up basketball for?";
    				 				answerSetDatabase[j] = 128;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 34:
    				 				questionDatabase[j] = "Which of these company produces ice hockey equipment?";
    				 				answerSetDatabase[j] = 132;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 35:
    				 				questionDatabase[j] = "Which is the deadliest snake in the world?";
    				 				answerSetDatabase[j] = 136;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 36:
    				 				questionDatabase[j] = "How many hearts does an octopus have?";
    				 				answerSetDatabase[j] = 140;
    				 				correctAnswer = 2;
    				 				correctDatabase[j] = 2;
    				 				break;
     
    				 			case 37:
    				 				questionDatabase[j] = "How many life boats did the Titanic have?";
    				 				answerSetDatabase[j] = 144;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 38:
    				 				questionDatabase[j] = "What is a group of frogs known as?";
    				 				answerSetDatabase[j] = 148;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 39:
    				 				questionDatabase[j] = "What was Walt Disney afraid of??";
    				 				answerSetDatabase[j] = 152;
    				 				correctAnswer = 2;
    				 				correctDatabase[j] = 2;
    				 				break;
     
    				 			case 40:
    				 				questionDatabase[j] = "Who was the inventor of the elevator?";
    				 				answerSetDatabase[j] = 156;
    				 				correctAnswer = 2;
    				 				correctDatabase[j] = 2;
    				 				break;
     
    				 			case 41:
    				 				questionDatabase[j] = "When did the World War II begin?";
    				 				answerSetDatabase[j] = 160;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 42:
    				 				questionDatabase[j] = "Who was the oldest US president to take office?";
    				 				answerSetDatabase[j] = 164;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 43:
    				 				questionDatabase[j] = "Which is the largest freshwater lake in the world?";
    				 				answerSetDatabase[j] = 168;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 44:
    				 				questionDatabase[j] = "Which of these is closest to the height of Mt. Everest?";
    				 				answerSetDatabase[j] = 172;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 45:
    				 				questionDatabase[j] = "Which is the deepest ocean in the world?";
    				 				answerSetDatabase[j] = 176;
    				 				correctAnswer = 2;
    				 				correctDatabase[j] = 2;
    				 				break;
     
    				 			case 46:
    				 				questionDatabase[j] = "What is the most widely eaten fish in the world?";
    				 				answerSetDatabase[j] = 180;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 47:
    				 				questionDatabase[j] = "What planet is closest in size to our moon?";
    				 				answerSetDatabase[j] = 184;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 48:
    				 				questionDatabase[j] = "What's the most malleable metal?";
    				 				answerSetDatabase[j] = 188;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 49:
    				 				questionDatabase[j] = "How many Megabytes are in a Gigabyte?";
    				 				answerSetDatabase[j] = 192;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 50:
    				 				questionDatabase[j] = "What number does 'giga' stand for?";
    				 				answerSetDatabase[j] = 196;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 51:
    				 				questionDatabase[j] = "What's short for 'binary digit'?";
    				 				answerSetDatabase[j] = 200;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 52:
    				 				questionDatabase[j] = "How many U.S. states border the Gulf of Mexico?";
    				 				answerSetDatabase[j] = 204;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 53:
    				 				questionDatabase[j] = "What is the eastern most capital in the United Sates?";
    				 				answerSetDatabase[j] = 208;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 54:
    				 				questionDatabase[j] = "What's removed from water in the process of desalination?";
    				 				answerSetDatabase[j] = 212;
    				 				correctAnswer = 2;
    				 				correctDatabase[j] = 2;
    				 				break;
     
    				 			case 55:
    				 				questionDatabase[j] = "What's the U. S. equivalent of 0.45 kilograms?";
    				 				answerSetDatabase[j] = 216;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 56:
    				 				questionDatabase[j] = "What's the common name for a cubic decimeter?";
    				 				answerSetDatabase[j] = 220;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 			case 57:
    				 				questionDatabase[j] = "What tree gives us prunes?";
    				 				answerSetDatabase[j] = 224;
    				 				correctAnswer = 3;
    				 				correctDatabase[j] = 3;
    				 				break;
     
    				 			case 58:
    				 				questionDatabase[j] = "What's the medical term for low blood sugar?";
    				 				answerSetDatabase[j] = 228;
    				 				correctAnswer = 2;
    				 				correctDatabase[j] = 2;
    				 				break;
     
    				 			case 59:
    				 				questionDatabase[j] = "What disease is the focus of oncology?";
    				 				answerSetDatabase[j] = 232;
    				 				correctAnswer = 0;
    				 				correctDatabase[j] = 0;
    				 				break;
     
    				 			case 60:
    				 				questionDatabase[j] = "What do leukemia sufferers have too many of?";
    				 				answerSetDatabase[j] = 236;
    				 				correctAnswer = 1;
    				 				correctDatabase[j] = 1;
    				 				break;
     
    				 		}
     
        		}
     
     
     
    					jtfQuestion.setText(questionDatabase[0]);
     
    					answerOne = answerDatabase[answerSetDatabase[0]];
    					answerTwo = answerDatabase[answerSetDatabase[0] + 1];
    					answerThree = answerDatabase[answerSetDatabase[0] + 2];
    					answerFour = answerDatabase[answerSetDatabase[0] + 3];
     
     
    				 	//SET-UP ANSWERS
     
    				 	jtfAnswerOne.setText(answerOne);
    				 	jtfAnswerTwo.setText(answerTwo);
    				 	jtfAnswerThree.setText(answerThree);
    				 	jtfAnswerFour.setText(answerFour);
     
     
     
     
     
     
    					jbtFirstAnswer.addActionListener(new ActionListener()
    					{
    						public void actionPerformed(ActionEvent e)
    							{
    								if(correctDatabase[0] == 0)
    									{
    										amountCorrect = amountCorrect + 1;
    									}
    								else
    									{
    										amountWrong = amountWrong + 1;
    									}
    							}
    					});
     
        }
        public static void main(String[] args)throws IOException
    	{
    		Game frame = new Game();
    		frame.setTitle("Game");
    		frame.setSize(700,500);
    		frame.setLocationRelativeTo(null);
    		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    		frame.setVisible(true);
     
     
    	}
    }




    Here is the file I am reading in:
    answerKey.in
    Jack Johnson
    George Bush
    George Washington
    No one
    J				 			
    47
    !@#$
    Purple
    Francisco Perez
    Daniel Derpentine
    Jessica Simpson
    Mike Smith
    Duff Soda
    Seven Up
    SuperBlunder
    Derpbutt
    Monitor Throwing
    Football Eating
    Ice Hockey
    Internet Licking
    649
    523
    1,235
    493
    No
    Maybe
    I like creating internet.
    Yes
    Moniterdash
    Rainbow Dash
    Turtle Mare
    I am
    Irritating Stick
    Quest of Soul Suckers
    Sodaman Goes to Mars
    World of Doorcraft
    Dual Screen Lite
    Doesn't Seem Likely
    Days Since Login
    Digital Subscriber Line
    26
    32
    20
    38
    Larynx
    Gallbladder
    Large Intestine
    Gastrocnemius
    Montreal Canadiens
    Detroit Red Wings
    Edmonton Oilers
    Toronto Maple Leafs
    Gordie Howe
    Wayne Gretzky
    Henri Richard
    Maurice 'Rocket' Richard
    Jack Johnson
    Wayne Gretzky
    Sidney Crosby
    Maurice Richard
    81
    76
    102
    88
    A Sheep
    A Monkey
    A Rabbit
    A Mouse
    Talc
    Gold
    Onyx
    Copper
    DOS Scale
    Hard Scale
    Derp Scale
    Moh's Scale
    5
    3
    14
    11
    53
    47
    25
    65
    Electric Guitar
    Violin
    Drums
    Harmonica
    Metallica
    Journey
    Justin Bieber
    Megadeth
    An Octopus
    A Great White Shark
    A Jellyfish
    An Electric Eel
    Sweden
    Finland
    France
    China
    Eczema
    HPV
    Herpes
    Tooth Decay
    United States
    Great Britian
    Finland
    No one
    Lake Nicaragua
    Lake Superior
    Lake Lavon
    Lake Sharktopia
    Barrack Obama
    George Washington
    George Bush
    John McCain
    Army Jeep
    SR-71
    The Aeroplane
    The Tank
    Graphic Ursa Interface
    Graphical User Interface
    Great Uranus Institution
    Greece Ukraine Industries
    Jackie Robinson
    Sammy Sosa
    Tim Teebow
    Trevor Daley
    Ice Hockey
    He stayed in basketball
    Bowling
    Baseball
    Microsoft
    Bauer
    Wilson
    Optiplex
    The Black Mamba
    Spitting Cobra
    Viper
    Anaconda
    1
    5
    3
    2
    132
    73
    40
    20
    An Army
    A Dart
    A Swarm
    A Pack
    Water
    Jellyfish
    Mice
    Ducks
    Jack Johnson
    Thomas Edison
    Elisha Otis
    Daniel Radcliff
    1892
    1939
    1962
    1921
    John McCain
    George Bush
    George Washington
    William Harrison
    Lake Superior
    Lake Omitakawa
    Lake Lavon
    Lake Travis
    10,421 Meters
    8,848 Meters
    21,518 Meters
    4,581 Meters
    Atlantic Ocean
    Arctic Ocean
    Pacific Ocean
    The Baltic Sea
    Cod Fish
    Catfish
    The Bass
    The Herring
    Pluto
    Mercury
    Venus
    Mars
    Iron
    Talc
    Adamantium
    Gold
    1,600
    1,024
    512
    256
    1,000
    1,000,000,000
    1,000,000
    1,000,000,000,000
    A bit
    A bite
    1
    0
    7
    5
    3
    12
    Austin
    Sacramento
    Norfolk
    Augusta
    Sugar
    Microorganisms
    Salt
    Saliva
    1 Pound
    50 Pounds
    2 Pounds
    10 Pounds
    A Pint
    A Liter
    A Gallon
    A Meter
    The Pineapple Tree
    The Coconut Tree
    The Prune Tree
    The Plum Tree
    Hepatits
    Hemoglocyoma
    Hypoglycemia
    HypoThermia
    Cancer
    AIDs
    HIV
    Herpes
    Red Blood Cells
    White Blood Cells
    Monohydrogen Dioxide
    De-oxyinated Bood Cells



    And here are the errors I get when I attempt to run the program:
    error: local variable amountCorrect is accessed from within inner class; needs to be declared final line 623
    error: local variable amountCorrect is accessed from within inner class; needs to be declared final line 623
    error: local variable amountWrong is accessed from within inner class; needs to be declared final line 627
    error: local variable amountWrong is accessed from within inner class; needs to be declared final line 627
    error: local variable correctDatabase is accessed from within inner class; needs to be declared final line 621

    I've attempted to put the code from lines 146 to 593 in different sections along with lines 617 to 630 but to no avail. What I want this code to do is it will ask you a question, give 4 possible answers, and then allow you to choose the answer via a button at the bottom of the screen then ask you a different one until 30 questions have been answered then tell you how many you got right and how many you got wrong. Can anyone please tell me how to get these 4 buttons to work correctly as I have tried everything. Thank you very much and I appreciate your help.


  2. #2
    Super Moderator Norm's Avatar
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    Default Re: Cannot get buttons working in GUI program

    Did you try what was recommended in the error message: needs to be declared final
    Define the variables as final.
    If you don't understand my answer, don't ignore it, ask a question.

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    Junior Member Yeshibo's Avatar
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    Default Re: Cannot get buttons working in GUI program

    It can't be a final as it changes.

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    Super Moderator Norm's Avatar
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    Default Re: Cannot get buttons working in GUI program

    Its a local variable that will NOT have a value when the method it is defined in exits. When the listener method is called the variable will have no value.
    What value do you want the listener to get?

    Make it a class variable and it will exist when the listener is called.
    If you don't understand my answer, don't ignore it, ask a question.

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