与dublicate类的代码错误 [英] code error with dublicate class
本文介绍了与dublicate类的代码错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我为计算器创建了该代码，但它没有使用命令提示符进行编译。我将它复制到net beans类并检查错误后，我在记事本中编码。所以我发现有相同名称的重复类。但没有这样的事情。而另一件事是计算不正常。所以，你能帮我解决这个问题吗？我将在这里复制我的代码。
i create that code for a calculator but it didn't compile with command prompt. i code this in notepad after i copy this to net beans class and check errors. so i find there are duplicate class with same name. but there isn't such a thing. And the other thing is calculates are didn't work correctly. So can you fix me this problem please? i will copy my code in here.
class calc implements ActionListener{
public void actionPerformed(ActionEvent e){
}
calc(){
JFrame F = new JFrame();
JTextField display = new JTextField(30);
JButton b1 = new JButton("1");
JButton b2 = new JButton("2");
JButton b3 = new JButton("3");
JButton b4 = new JButton("4");
JButton b5 = new JButton("5");
JButton b6 = new JButton("6");
JButton b7 = new JButton("7");
JButton b8 = new JButton("8");
JButton b9 = new JButton("9");
JButton b0 = new JButton("0");
JButton bEqual = new JButton("=");
JButton bAddition = new JButton("+");
JButton bSubstraction = new JButton("-");
JButton bDivision = new JButton("/");
JButton bDot = new JButton(".");
JButton bMultiplication = new JButton("*");
JButton bOneX = new JButton("1/x");
JButton bModulus = new JButton("%");
JButton bCE = new JButton("CE");
JButton bC = new JButton("C");
JButton bMC = new JButton("MC");
JButton bMR = new JButton("MR");
JButton bMS = new JButton("MS");
JButton bMadd = new JButton("M+");
JButton bMsub = new JButton("M-");
JPanel p1 = new JPanel();
JPanel p2 = new JPanel();
p1.add(display);
p2.add(b1);
p2.add(b2);
p2.add(b3);
p2.add(b4);
p2.add(b5);
p2.add(b6);
p2.add(b7);
p2.add(b8);
p2.add(b9);
p2.add(b0);
p2.add(bCE);
p2.add(bC);
p2.add(bMC);
p2.add(bMR);
p2.add(bMS);
p2.add(bMadd);
p2.add(bMsub);
p2.add(bAddition );
p2.add(bSubstraction);
p2.add(bDivision);
p2.add(bDot);
p2.add(bOneX);
p2.add(bMultiplication);
p2.add(bModulus);
p2.add(bEqual);
F.add(p1,BorderLayout.NORTH);
F.add(p2,BorderLayout.CENTER);
GridLayout g1 =new GridLayout(5,5);
GridLayout g2 =new GridLayout(1,1);
p1.setLayout(g2);
p2.setLayout(g1);
F.setTitle("Calculator_YESHANI");
F.setLocation(370,200);
F.setSize(340, 442);
F.setResizable(false);
String out = display.getText();
String cl1 = null,cl2 = null,cl3 = null,cl4 = null,cl5 = null,cl6 = null,cl7 = null;
if (e.getsource() == bCE) {
display.setText("");
if (e.source().equals(b1)) {
display.setText(out + e.getActionCommand());
} else if (e.getSource().equals(b2)) {
display.setText(out + e.getActionCommand());
} else if (e.getSource().equals(b3)) {
display.setText(out + e.getActionCommand());
} else if (e.getSource().equals(b4)) {
display.setText(out + e.getActionCommand());
} else if (e.getSource().equals(b5)) {
display.setText(out + e.getActionCommand());
} else if (e.getSource().equals(b6)) {
display.setText(out + e.getActionCommand());
} else if (e.getSource().equals(b7)) {
display.setText(out + e.getActionCommand());
} else if (e.getSource().equals(b8)) {
display.setText(out + e.getActionCommand());
} else if (e.getSource().equals(b9)) {
display.setText(out + e.getActionCommand());
} else if (e.getSource().equals(b0));
display.setText(out + e.getActionCommand());
if (e.getSource().equals(bCE)) {
display.setText(out + e.getActionCommand());
} else if (e.getSource() == (bAddition)) {
cl1 = out;
display.setText(null);
} else if (e.getSource() == (bSubstraction)) {
cl2 = out;
display.setText(null);
} else if (e.getSource() == (bMultiplication)) {
cl3 = out;
display.setText(null);
} else if (e.getSource() == (bDivision)) {
cl4 = out;
display.setText(null);
} else if (e.getSource() == (bModulus)) {
cl5 = out;
display.setText(null);
} else if (e.getSource() == (bOneX)) {
cl6 = out;
display.setText(null);
} else if (e.getSource() == (bC)) {
cl7 = out;
display.setText(null);
} else if (bEqual.equals(e.getSource())) {
if (cl1 != null) {
String value = String.valueOf(Double.parseDouble(cl1) + Double.parseDouble(display.getText()));
display.setText(value);
cl1 = null;
} else if (cl2 != null) {
String value = String.valueOf(Double.parseDouble(cl2) - Double.parseDouble(display.getText()));
display.setText(value);
cl2 = null;
} else if (cl3 != null) {
String value = String.valueOf(Double.parseDouble(cl3) * Double.parseDouble(display.getText()));
display.setText(value);
cl3 = null;
} else if (cl4 != null) {
String value = String.valueOf(Double.parseDouble(cl4) / Double.parseDouble(display.getText()));
display.setText(value);
cl4 = null;
} else if (cl5 != null) {
String value = String.valueOf(Double.parseDouble(cl5) * Double.parseDouble(display.getText()) / 100);
display.setText(value);
cl5 = null;
} else if (cl6 != null) {
String value = String.valueOf(1 / Double.parseDouble(cl6));
display.setText(value);
cl6 = null;
} else if (cl7 != null) {
String value = String.valueOf(Math.sqrt(Double.parseDouble(cl7)));
display.setText(value);
cl7 = null;
}
}
b1.addActionListener(this);
b2.addActionListener(this);
b3.addActionListener(this);
b4.addActionListener(this);
b5.addActionListener(this);
b6.addActionListener(this);
b7.addActionListener(this);
b8.addActionListener(this);
b9.addActionListener(this);
b0.addActionListener(this);
bEqual.addActionListener(this);
bCE.addActionListener(this);
bModulus.addActionListener(this);
bOneX.addActionListener(this);
bAddition.addActionListener(this);
bDot.addActionListener(this);
bMultiplication.addActionListener(this);
bDivision.addActionListener(this);
bC.addActionListener(this);
bSubstraction.addActionListener(this);
F.setDefaultCloseOperation(EXIT_ON_CLOSE);
p2.setBackground(Color.PINK);
p1.setBackground(Color.BLUE);
F.setVisible(true);
}
}
public static void main(String args[]) {
calc c = new calc();
}
}
添加了代码块格式并更新了标签（Javascript - > Java）[/ Edit]
Code block formatting added and tag updated (Javascript -> Java)[/Edit]
推荐答案
永远 - 永远不要！ - 我从来没说过吗？ - 永远不会!!
never - NEVER!!! - did I say never? - never ever!!
JFrame F = new JFrame();
变量总是以小写字母开头。编译器可能会感到困惑。
SA的重用需求：
Variables are always starting lower case. The compiler probably got confused.
SA's demand for reuse:
JButton b1 = new JButton("1");
JButton b2 = new JButton("2");
JButton b3 = new JButton("3");
...
p2.add(b1);
p2.add(b2);
p2.add(b3);
.....
兑换：
convert to:
ps.add(createButton("1"));
...
private JButton createButton(String strLabel){
// code to create button with actionlistener and return that
}
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