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我有一個稱爲輸入的整數轉換爲字符串字符串,我有我的oneButton.addActionListener設置和public void actionPerformed(ActionEvent e){我想要我的計算器的整數當我按下我的JButton中的一個時
如果(e.getSource()== oneButton){if
}}
,但在我的計算器數量保持爲0,任何幫助
CODE:
//everything is imported
public class Ken implements ActionListener{
static JButton oneButton = new JButton("1");
static JButton twoButton = new JButton("2");
static JButton threeButton = new JButton("3");
static JButton fourButton = new JButton("4");
static JButton fiveButton = new JButton("5");
static JButton sixButton = new JButton("6");
static JButton sevenButton = new JButton("7");
static JButton eightButton = new JButton("8");
static JButton nineButton = new JButton("9");
static JButton zeroButton = new JButton("0");
static JButton minusButton = new JButton("-");
static JButton timesButton = new JButton("*");
static JButton enterButton = new JButton("=");
static JButton dividButton = new JButton("/");
static JButton plusButton = new JButton("+");
public static int input = 0;
public Ken(){
JFrame frame = new JFrame("MyCalc");
String string = ""+input;
JTextField text = new JTextField(string, 9);
frame.setSize(476, 500);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
frame.setResizable(false);
FlowLayout fl = new FlowLayout(0, 30, 20);
setLayout(fl);
Border empty;
empty = BorderFactory.createEmptyBorder();
frame.getContentPane().setLayout(fl);
Container con = frame.getContentPane();
con.setBackground(Color.LIGHT_GRAY);
Font f = new Font("MS UI Gothic", Font.BOLD, 40);
Font f2 = new Font("Engravers MT", Font.PLAIN, 40);
int bHeight = 80;
int bWidth = 70;
text.setBackground(Color.GREEN);
text.setFont(f2);
text.setPreferredSize(new Dimension(bHeight, bWidth));
text.setEditable(false);
frame.add(text, BorderLayout.NORTH);
oneButton.setPreferredSize(new Dimension(bHeight, bWidth));
oneButton.setBackground(Color.DARK_GRAY);
oneButton.setForeground(Color.GREEN);
oneButton.setFont(f);
oneButton.addActionListener(new Evt());
frame.add(oneButton);
twoButton.setPreferredSize(new Dimension(bHeight, bWidth));
twoButton.setBackground(Color.DARK_GRAY);
twoButton.setForeground(Color.GREEN);
twoButton.setFont(f);
frame.add(twoButton);
threeButton.setPreferredSize(new Dimension(bHeight, bWidth));
threeButton.setBackground(Color.DARK_GRAY);
threeButton.setForeground(Color.GREEN);
threeButton.setFont(f);
frame.add(threeButton);
plusButton.setPreferredSize(new Dimension(bHeight, bWidth));
plusButton.setBackground(Color.DARK_GRAY);
plusButton.setForeground(Color.GREEN);
plusButton.setFont(f);
frame.add(plusButton);
fourButton.setPreferredSize(new Dimension(bHeight, bWidth));
fourButton.setBackground(Color.DARK_GRAY);
fourButton.setForeground(Color.GREEN);
fourButton.setFont(f);
frame.add(fourButton);
fiveButton.setPreferredSize(new Dimension(bHeight, bWidth));
fiveButton.setBackground(Color.DARK_GRAY);
fiveButton.setForeground(Color.GREEN);
fiveButton.setFont(f);
frame.add(fiveButton);
sixButton.setPreferredSize(new Dimension(bHeight, bWidth));
sixButton.setBackground(Color.DARK_GRAY);
sixButton.setForeground(Color.GREEN);
sixButton.setFont(f);
frame.add(sixButton);
minusButton.setPreferredSize(new Dimension(bHeight, bWidth));
minusButton.setBackground(Color.DARK_GRAY);
minusButton.setForeground(Color.GREEN);
minusButton.setFont(f);
frame.add(minusButton);
sevenButton.setPreferredSize(new Dimension(bHeight, bWidth));
sevenButton.setBackground(Color.DARK_GRAY);
sevenButton.setForeground(Color.GREEN);
sevenButton.setFont(f);
frame.add(sevenButton);
eightButton.setPreferredSize(new Dimension(bHeight, bWidth));
eightButton.setBackground(Color.DARK_GRAY);
eightButton.setForeground(Color.GREEN);
eightButton.setFont(f);
frame.add(eightButton);
nineButton.setPreferredSize(new Dimension(bHeight,bWidth));
nineButton.setBackground(Color.DARK_GRAY);
nineButton.setForeground(Color.GREEN);
nineButton.setFont(f);
frame.add(nineButton);
timesButton.setPreferredSize(new Dimension(bHeight, bWidth));
timesButton.setBackground(Color.DARK_GRAY);
timesButton.setForeground(Color.GREEN);
timesButton.setFont(f);
frame.add(timesButton);
zeroButton.setPreferredSize(new Dimension(bHeight, bWidth));
zeroButton.setBackground(Color.DARK_GRAY);
zeroButton.setForeground(Color.GREEN);
zeroButton.setFont(f);
frame.add(zeroButton);
enterButton.setPreferredSize(new Dimension(190, bWidth));
enterButton.setBackground(Color.DARK_GRAY);
enterButton.setForeground(Color.GREEN);
enterButton.setFont(f);
frame.add(enterButton);
dividButton.setPreferredSize(new Dimension(bHeight, bWidth));
dividButton.setBackground(Color.DARK_GRAY);
dividButton.setForeground(Color.GREEN);
dividButton.setFont(f);
frame.add(dividButton);
frame.setComponentOrientation(
ComponentOrientation.LEFT_TO_RIGHT);
}
private static Dimension Dimension(int bHeight, int bWidth) {
// TODO Auto-generated method stub
return null;
}
private static void setLayout(FlowLayout fl) {
// TODO Auto-generated method stub
}
public static void main(String[] args){
new Ken();
}
private class Evt implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
if(e.getSource() == oneButton){
}
}
}
}
任何幫助嗎?
謝謝你,在對actionPerformed使用System.out.println()進行一些調試之後,我得出結論,問題是輸入變量沒有改變。任何想法? –
工作過,謝謝 –