Бих искал да създам следния GUI:
https://www.dropbox.com/s/ebm057jfevwe532/result.png?dl=0
Ето моят код:
public class TypingTutor extends JFrame{
private JPanel mainPanel;
private JPanel[] keyboardPanel;
private JLabel instructionsLabel;
private JLabel noteLabel;
private JTextArea typingTextArea;
private JButton[] buttonKeysFirstRow;
private JButton[] buttonKeysSecondRow;
private JButton[] buttonKeysThirdRow;
private JButton[] buttonKeysFourthRow;
private JButton[] buttonKeysFifthRow;
//TypingTutor no-argument constructor
public TypingTutor(){
super("Typing Application");
setLayout(new BoxLayout(getContentPane(), BoxLayout.Y_AXIS));
instructionsLabel = new JLabel("Type some text using your keyboard. The keys you press " +
"will be highlighted and the text will be displayed.");
noteLabel = new JLabel("Note: Clicking the buttons with your mouse will not perform any " +
"action.");
add(instructionsLabel);
add(noteLabel);
typingTextArea = new JTextArea();
add(typingTextArea);
//each row represents each row in the keyboard
buttonKeysFirstRow = new JButton[14];
buttonKeysSecondRow = new JButton[13];
buttonKeysThirdRow = new JButton[14];
buttonKeysFourthRow = new JButton[12];
buttonKeysFifthRow = new JButton[4];
initializeKeys(1);
initializeKeys(2);
initializeKeys(3);
initializeKeys(4);
initializeKeys(5);
Box[] keyboard = new Box[5];
for(int i = 0; i < keyboard.length; i++){
keyboard[i] = Box.createHorizontalBox();
switch(i){
case 0:
for(int j = 0; j < buttonKeysFirstRow.length; j++){
keyboard[i].add(buttonKeysFirstRow[j]);
} //end for
break;
case 1:
for(int j = 0; j < buttonKeysSecondRow.length; j++){
keyboard[i].add(buttonKeysSecondRow[j]);
} //end for
break;
case 2:
for(int j = 0; j < buttonKeysThirdRow.length; j++){
keyboard[i].add(buttonKeysThirdRow[j]);
} //end for
break;
case 3:
for(int j = 0; j < buttonKeysFourthRow.length; j++){
keyboard[i].add(buttonKeysFourthRow[j]);
} //end for
break;
case 4:
for(int j = 0; j < buttonKeysFifthRow.length; j++){
keyboard[i].add(buttonKeysFifthRow[j]);
} //end for
break;
} //end switch
add(keyboard[i]);
} //end for
} //end TypingTutor no-argument constructor
//initializes button keys with their values
private void initializeKeys(int keys){
switch(keys){
case 1:
buttonKeysFirstRow[0] = new JButton("|\n°");
buttonKeysFirstRow[1] = new JButton("1");
buttonKeysFirstRow[2] = new JButton("2");
buttonKeysFirstRow[3] = new JButton("3");
buttonKeysFirstRow[4] = new JButton("4");
buttonKeysFirstRow[5] = new JButton("5");
buttonKeysFirstRow[6] = new JButton("6");
buttonKeysFirstRow[7] = new JButton("7");
buttonKeysFirstRow[8] = new JButton("8");
buttonKeysFirstRow[9] = new JButton("9");
buttonKeysFirstRow[10] = new JButton("0");
buttonKeysFirstRow[11] = new JButton("'\n?");
buttonKeysFirstRow[12] = new JButton("¿\n¡");
buttonKeysFirstRow[13] = new JButton("Backspace");
break;
case 2:
buttonKeysSecondRow[0] = new JButton(" Tab ");
buttonKeysSecondRow[1] = new JButton("Q");
buttonKeysSecondRow[2] = new JButton("W");
buttonKeysSecondRow[3] = new JButton("E");
buttonKeysSecondRow[4] = new JButton("R");
buttonKeysSecondRow[5] = new JButton("T");
buttonKeysSecondRow[6] = new JButton("Y");
buttonKeysSecondRow[7] = new JButton("U");
buttonKeysSecondRow[8] = new JButton("I");
buttonKeysSecondRow[9] = new JButton("O");
buttonKeysSecondRow[10] = new JButton("P");
buttonKeysSecondRow[11] = new JButton("´\n¨");
buttonKeysSecondRow[12] = new JButton("+\n*");
break;
case 3:
buttonKeysThirdRow[0] = new JButton(" Caps ");
buttonKeysThirdRow[1] = new JButton("A");
buttonKeysThirdRow[2] = new JButton("S");
buttonKeysThirdRow[3] = new JButton("D");
buttonKeysThirdRow[4] = new JButton("F");
buttonKeysThirdRow[5] = new JButton("G");
buttonKeysThirdRow[6] = new JButton("H");
buttonKeysThirdRow[7] = new JButton("J");
buttonKeysThirdRow[8] = new JButton("K");
buttonKeysThirdRow[9] = new JButton("L");
buttonKeysThirdRow[10] = new JButton("Ñ");
buttonKeysThirdRow[11] = new JButton("{\n[");
buttonKeysThirdRow[12] = new JButton("}\n]");
buttonKeysThirdRow[13] = new JButton(" Enter ");
break;
case 4:
buttonKeysFourthRow[0] = new JButton(" Shift ");
buttonKeysFourthRow[1] = new JButton("<\n>");
buttonKeysFourthRow[2] = new JButton("Z");
buttonKeysFourthRow[3] = new JButton("X");
buttonKeysFourthRow[4] = new JButton("C");
buttonKeysFourthRow[5] = new JButton("V");
buttonKeysFourthRow[6] = new JButton("B");
buttonKeysFourthRow[7] = new JButton("N");
buttonKeysFourthRow[8] = new JButton("M");
buttonKeysFourthRow[9] = new JButton(",\n;");
buttonKeysFourthRow[10] = new JButton(".\n:");
buttonKeysFourthRow[11] = new JButton("^");
break;
case 5:
buttonKeysFifthRow[0] = new JButton("");
buttonKeysFifthRow[1] = new JButton("<");
buttonKeysFifthRow[2] = new JButton("v");
buttonKeysFifthRow[3] = new JButton(">");
buttonKeysFifthRow[0].setMinimumSize(new Dimension(50, 10));
break;
} //end switch
} //end method initializeKeys
} //end class TypingTutor
И ето моят резултат:
https://www.dropbox.com/s/dx99npirnl0v1wd/sample.png?dl=0
Опитах да използвам класа javax.swing.Box и да добавя основна кутия с Box.createVerticalBox() към центъра в JFrame BorderLayout и след това да добавя други кутии с Box.createHorizontalBox() и получавам същия резултат, всичко е наред докато не добавя JButtons след JTextArea, след това JButtons се свиват и JLabel се подравнява вдясно.
