code

src/System/src/Fu.java

@@ -0,0 +1,14 @@
+public class Fu implements MathComputer{
+    @Override
+    public void handle(Computer data) {
+        String s="";
+        double r=data.computerDataItem();
+        data.tempResult.push(r);
+        r=-r;
+        s=HandleEvent.get(r);
+        data.dataItem.removeAllElements();
+        for (int i = 0; i < s.length(); i++) {
+            data.dataItem.push(s.charAt(i));
+        }
+    }
+}

src/System/src/HandleBack.java

@@ -0,0 +1,13 @@
+import java.awt.event.ActionEvent;
+
+public class HandleBack extends HandleEvent{
+    public HandleBack(CalculatorWindow window) {
+        super(window);
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        window.computer.backspace();
+        show();
+    }
+}

src/System/src/HandleClear.java

@@ -0,0 +1,13 @@
+import java.awt.event.ActionEvent;
+
+public class HandleClear extends HandleEvent{
+    public HandleClear(CalculatorWindow window) {
+        super(window);
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        window.computer.init();
+        show();
+    }
+}

src/System/src/HandleDight.java

@@ -0,0 +1,21 @@
+import javax.swing.*;
+import java.awt.event.ActionEvent;
+
+public class HandleDight extends HandleEvent{
+    public HandleDight(CalculatorWindow window) {
+        super(window);
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        JButton b=(JButton) e.getSource();
+        String btnName=b.getText().trim();//去除前后空白区
+        char dight=btnName.charAt(0);
+        window.computer.setDataItem(dight);
+        show();
+        if(dight=='.'){
+            String s=get(window.computer.computerDataItem());
+            window.showDataItem.setText(" "+s+".");
+        }
+    }
+}

src/System/src/HandleEquation.java

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+import java.awt.event.ActionEvent;
+public class HandleEquation extends HandleEvent{
+    public HandleEquation(CalculatorWindow window) {
+        super(window);
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        String s ="";
+        if(window.computer.computerDataItem()==window.computer.getResult()){
+            if(window.computer.getTempResult()==-window.computer.getResult())
+            s=" "+window.computer.getTempResult()+" 取反为 "+window.computer.getResult();
+            if(1/window.computer.getTempResult()==window.computer.getResult())
+                s=" "+window.computer.getTempResult()+" 倒数为 "+window.computer.getResult();
+            if(Math.sqrt(window.computer.getTempResult())==window.computer.getResult())
+                s=" "+window.computer.getTempResult()+" 开方为 "+window.computer.getResult();
+        }else{
+        s=" "+window.computer.getTempResult()+" "+window.computer.getOperator()+
+                " "+window.computer.computerDataItem()+" = "+window.computer.getResult();}
+        window.computerProcess.append("\n"+s);
+//       show();
+    }
+}

src/System/src/HandleEvent.java

@@ -0,0 +1,31 @@
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+public class HandleEvent implements ActionListener {
+     CalculatorWindow window;
+
+    public HandleEvent(CalculatorWindow window) {
+        this.window = window;
+    }
+    public  void show(){
+        window.resultShow.setText(" = "+get(window.computer.getResult()));
+        window.showTempResult.setText(get(window.computer.getTempResult())+" ");
+        window.showOperator.setText(" "+window.computer.getOperator()+" ");
+        window.showDataItem.setText(" "+get(window.computer.computerDataItem()));
+    }
+
+    public static String get(double r){//返回浮点数的串表示
+        String s="";
+        Double d=new Double(r);
+        long n=d.longValue();//得到r的整数部分
+        if(Math.abs(r-n)>0)//取绝对值
+            s=""+r;
+        else
+            s=""+n;//小数部分为0则省略
+        return s;
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+    }
+}

src/System/src/HandleFile.java

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+import javax.swing.*;
+import java.awt.event.ActionEvent;
+import java.io.*;
+
+public class HandleFile extends HandleEvent{
+    public HandleFile(CalculatorWindow window) {
+        super(window);
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        if(e.getSource()==window.copyBtn){
+            window.computerProcess.copy();
+        }
+        if(e.getSource()==window.clearTextBtn){
+            window.computerProcess.setText(null);
+        }
+        if(e.getSource()==window.saveBtn){
+            JFileChooser chooser=new JFileChooser();
+            int state=chooser.showSaveDialog(null);
+            File file =chooser.getSelectedFile();
+            if(file!=null&&state==JFileChooser.APPROVE_OPTION){
+                try {
+                    String content=window.computerProcess.getText();
+                    StringReader reader=new StringReader(content);
+                    BufferedReader in=new BufferedReader(reader);
+                    FileWriter fw=new FileWriter(file);
+                    BufferedWriter out=new BufferedWriter(fw);
+                    String s=null;
+                    while ((s=in.readLine())!=null){
+                        out.write(s);
+                        out.newLine();
+                    }
+                    in.close();
+                    out.close();
+                }catch (IOException exception){
+
+                }
+            }
+        }
+    }
+}

src/System/src/HandleFu.java

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+import java.awt.event.ActionEvent;
+
+public class HandleFu extends HandleEvent{
+    public HandleFu(CalculatorWindow window) {
+        super(window);
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        window.computer.initMath(new Fu());
+        show();
+    }
+}

src/System/src/HandleOperator.java

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+import javax.swing.*;
+import java.awt.event.ActionEvent;
+
+public class HandleOperator extends HandleEvent{
+    public HandleOperator(CalculatorWindow window) {
+        super(window);
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        JButton b=(JButton) e.getSource();
+        String btnName;
+        btnName=b.getText().trim();//去除前后空白区
+        char operator=btnName.charAt(0);
+        window.computer.setOperator(operator);
+        show();
+    }
+}

src/System/src/HandleReciprocal.java

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+import java.awt.event.ActionEvent;
+
+public class HandleReciprocal extends HandleEvent{
+    public HandleReciprocal(CalculatorWindow window) {
+        super(window);
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        window.computer.initMath(new Reciprocal());
+        show();
+    }
+}

src/System/src/HandleSqrt.java

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+import java.awt.event.ActionEvent;
+
+public class HandleSqrt extends HandleEvent{
+    public HandleSqrt(CalculatorWindow window) {
+        super(window);
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        window.computer.initMath(new Sqrt());
+        show();
+    }
+}

src/System/src/MathComputer.java

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+public interface MathComputer {
+    public void handle(Computer data);
+}

src/System/src/Reciprocal.java

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+public class Reciprocal implements MathComputer{
+    @Override
+    public void handle(Computer data) {
+        String s="";
+        double r= data.computerDataItem();
+        data.tempResult.push(r);
+        r=1/r;
+        s=HandleEvent.get(r);
+        data.dataItem.removeAllElements();
+        for (int i = 0; i < s.length(); i++) {
+            data.dataItem.push(s.charAt(i));
+        }
+    }
+}

src/System/src/Sqrt.java

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+public class Sqrt implements MathComputer{
+
+    @Override
+    public void handle(Computer data) {
+        String s="";
+        double r=data.computerDataItem();
+        data.tempResult.push(r);
+        r=Math.sqrt(r);
+        s=HandleEvent.get(r);
+        data.dataItem.removeAllElements();
+        for (int i = 0; i < s.length(); i++) {
+            data.dataItem.push(s.charAt(i));
+        }
+    }
+}

src/System/src/test.java

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+public class test {
+    public static void main(String[] args) {
+        CalculatorWindow cw=new CalculatorWindow();
+    }
+}

src/test.txt

@@ -1 +0,0 @@
-测试git上传。。。