From 0ab3323d0ca70a9071f8bf129b625546a083bbc5 Mon Sep 17 00:00:00 2001
From: NRc <spider752@126.com>
Date: Wed, 8 Jun 2022 22:20:00 +0800
Subject: [PATCH 1/2] =?UTF-8?q?=E6=8F=90=E4=BA=A4=E8=AE=A1=E7=AE=97?=
 =?UTF-8?q?=E5=99=A8=E6=A1=86=E6=9E=B6=E5=92=8C=E4=B8=BB=E7=B1=BB?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/java2022spring/CalculatorFrame.java | 85 +++++++++++++++++++++++++
 src/java2022spring/MainClass.java       |  7 ++
 2 files changed, 92 insertions(+)
 create mode 100644 src/java2022spring/CalculatorFrame.java
 create mode 100644 src/java2022spring/MainClass.java

diff --git a/src/java2022spring/CalculatorFrame.java b/src/java2022spring/CalculatorFrame.java
new file mode 100644
index 0000000..17175ca
--- /dev/null
+++ b/src/java2022spring/CalculatorFrame.java
@@ -0,0 +1,85 @@
+package java2022spring;
+import java.awt.BorderLayout;
+import java.awt.Color;
+import java.awt.Dimension;
+import java.awt.FlowLayout;
+import java.awt.GridLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+import java.util.Arrays;
+
+import javax.swing.JButton;
+import javax.swing.JFrame;
+import javax.swing.JMenu;
+import javax.swing.JMenuBar;
+import javax.swing.JPanel;
+import javax.swing.JTextArea;
+import javax.swing.JTextField;
+
+public class CalculatorFrame extends JFrame{    //计算器外观
+	JTextArea text=new JTextArea();
+	double a,b,sum;
+	int i;
+	ActionListener listener;
+	public CalculatorFrame() {
+		setTitle("计算器");//计算器基础设置
+		setBounds(100,100,400,400);
+		
+		setResizable(false);
+		setVisible(true);
+		setDefaultCloseOperation(EXIT_ON_CLOSE);
+		
+		JMenuBar menubar=new JMenuBar();//创建菜单条
+		JMenu menu1=new JMenu("查看(V)");//创建和设置菜单名
+		JMenu menu2=new JMenu("编辑(E)");//创建和设置菜单名
+		JMenu menu3=new JMenu("帮助(H)");//创建和设置菜单名
+		menubar.add(menu1);//将菜单加入到菜单条中
+		menubar.add(menu2);
+		menubar.add(menu3);
+		setJMenuBar(menubar);//将设置好的菜单条放在窗口中
+		setLayout(new BorderLayout());
+		
+		JPanel p1=new JPanel();
+		JPanel p2=new JPanel();//面板
+		text.setPreferredSize(new Dimension (370,60));//设置组件大小
+		p2.setLayout(new FlowLayout());
+		p1.add(text);
+		this.add(p1,BorderLayout.NORTH);
+		
+		p2.setLayout(new GridLayout(5,4));	//添加按钮
+		JButton button[]=new JButton[20];
+		button[0]=new JButton("C");		//清空
+		button[1]=new JButton("CE");	//清除之前输入的一个数据
+		button[2]=new JButton("%");		//取余
+		button[3]=new JButton("÷");		//除法
+		button[4]=new JButton("7");
+		button[5]=new JButton("8");
+		button[6]=new JButton("9");
+		button[7]=new JButton("x");		//乘号
+		button[8]=new JButton("4");
+		button[9]=new JButton("5");
+		button[10]=new JButton("6");
+		button[11]=new JButton("—");	//减号
+		button[12]=new JButton("1");
+		button[13]=new JButton("2");
+		button[14]=new JButton("3");
+		button[15]=new JButton("+");	//加号
+		button[16]=new JButton("e");	//乘方
+		button[17]=new JButton("0");
+		button[18]=new JButton(".");	//小数点
+		button[19]=new JButton("=");	//等于
+		
+		for(int i=0;i<button.length;i++ )	//将组件加入容器
+			p2.add(button[i]);
+		button[19].setBackground(Color.ORANGE);//设置按钮的背景颜色为橙色
+		p2.add(button[19]);
+		add(p2,BorderLayout.CENTER);
+		
+		for(int i=0;i<button.length;i++)	//为每一个事件(按钮)添加监视器
+			listener=new Listener();
+			button[i].addActionListener(this);
+		this.setVisible(true);
+		
+		
+	}
+}
diff --git a/src/java2022spring/MainClass.java b/src/java2022spring/MainClass.java
new file mode 100644
index 0000000..6dab16c
--- /dev/null
+++ b/src/java2022spring/MainClass.java
@@ -0,0 +1,7 @@
+package java2022spring;
+
+public class MainClass {
+	public static void main(String args[]) {
+		CalculatorFrame frame=new CalculatorFrame();
+	}
+}
-- 
Gitee


From 8cc763f1b74ce62ac5b42bc54c8fe1db211a6b75 Mon Sep 17 00:00:00 2001
From: NRc <spider752@126.com>
Date: Fri, 10 Jun 2022 06:01:06 +0800
Subject: [PATCH 2/2] =?UTF-8?q?=E8=A1=A5=E5=85=85=E7=9B=91=E8=A7=86?=
 =?UTF-8?q?=E5=99=A8=E5=92=8C=E4=BA=8B=E4=BB=B6=E5=A4=84=E7=90=86?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/java2022spring/CalculatorFrame.java | 199 ++++++++++++++++++++++--
 1 file changed, 184 insertions(+), 15 deletions(-)

diff --git a/src/java2022spring/CalculatorFrame.java b/src/java2022spring/CalculatorFrame.java
index 17175ca..6c476d2 100644
--- a/src/java2022spring/CalculatorFrame.java
+++ b/src/java2022spring/CalculatorFrame.java
@@ -16,18 +16,16 @@ import javax.swing.JPanel;
 import javax.swing.JTextArea;
 import javax.swing.JTextField;
 
-public class CalculatorFrame extends JFrame{    //计算器外观
+public class CalculatorFrame extends JFrame implements ActionListener {    //计算器外观
+	private StringBuffer sBuffer =new StringBuffer();//用StringBuffer类显示，存储
+	private String num;
 	JTextArea text=new JTextArea();
 	double a,b,sum;
 	int i;
-	ActionListener listener;
 	public CalculatorFrame() {
 		setTitle("计算器");//计算器基础设置
 		setBounds(100,100,400,400);
-		
-		setResizable(false);
-		setVisible(true);
-		setDefaultCloseOperation(EXIT_ON_CLOSE);
+		this.setResizable(false);
 		
 		JMenuBar menubar=new JMenuBar();//创建菜单条
 		JMenu menu1=new JMenu("查看(V)");//创建和设置菜单名
@@ -36,8 +34,8 @@ public class CalculatorFrame extends JFrame{    //
 		menubar.add(menu1);//将菜单加入到菜单条中
 		menubar.add(menu2);
 		menubar.add(menu3);
-		setJMenuBar(menubar);//将设置好的菜单条放在窗口中
-		setLayout(new BorderLayout());
+		this.setJMenuBar(menubar);//将设置好的菜单条放在窗口中
+		this.setLayout(new BorderLayout());
 		
 		JPanel p1=new JPanel();
 		JPanel p2=new JPanel();//面板
@@ -49,7 +47,7 @@ public class CalculatorFrame extends JFrame{    //
 		p2.setLayout(new GridLayout(5,4));	//添加按钮
 		JButton button[]=new JButton[20];
 		button[0]=new JButton("C");		//清空
-		button[1]=new JButton("CE");	//清除之前输入的一个数据
+		button[1]=new JButton("Back");	//清除之前输入的一个数据
 		button[2]=new JButton("%");		//取余
 		button[3]=new JButton("÷");		//除法
 		button[4]=new JButton("7");
@@ -69,17 +67,188 @@ public class CalculatorFrame extends JFrame{    //
 		button[18]=new JButton(".");	//小数点
 		button[19]=new JButton("=");	//等于
 		
-		for(int i=0;i<button.length;i++ )	//将组件加入容器
+		for(int i=0;i<button.length;i++ ) {	//将组件加入容器
 			p2.add(button[i]);
-		button[19].setBackground(Color.ORANGE);//设置按钮的背景颜色为橙色
-		p2.add(button[19]);
+		}
+		
 		add(p2,BorderLayout.CENTER);
 		
-		for(int i=0;i<button.length;i++)	//为每一个事件(按钮)添加监视器
-			listener=new Listener();
+		for(int i=0;i<button.length;i++) {	//添加监视器
 			button[i].addActionListener(this);
+		}
 		this.setVisible(true);
+		this.setDefaultCloseOperation(EXIT_ON_CLOSE);
 		
-		
+	}
+		public void actionPerformed(ActionEvent e) {//处理事件
+			String lab=e.getActionCommand();//获取按钮字符
+			
+			if(lab.equals("0"))	//处理按钮 0~9
+			{
+				sBuffer.append("0");		
+				text.setText(sBuffer.toString());
+			}
+			else if(lab.equals("1"))
+			{
+				sBuffer.append("1");				
+				text.setText(sBuffer.toString());
+			}
+			else if(lab.equals("2"))
+			{
+				sBuffer.append("2");	
+				text.setText(sBuffer.toString());
+			}
+			else if(lab.equals("3"))
+			{
+				sBuffer.append("3");	
+				text.setText(sBuffer.toString());
+			}
+			else if(lab.equals("4"))
+			{
+				sBuffer.append("4");					
+				text.setText(sBuffer.toString());	
+			}
+			else if(lab.equals("5"))
+			{
+				sBuffer.append("5");				
+				text.setText(sBuffer.toString());	
+			}
+			else if(lab.equals("6"))
+			{
+				sBuffer.append("6");				
+				text.setText(sBuffer.toString());	
+			}
+			else if(lab.equals("7"))
+			{
+				sBuffer.append("7");					
+				text.setText(sBuffer.toString());	
+			}
+			
+			else if(lab.equals("8"))
+			{
+				sBuffer.append("8");						
+				text.setText(sBuffer.toString());	
+			}
+			else if(lab.equals("9"))
+			{
+				sBuffer.append("9");		
+				text.setText(sBuffer.toString());
+			}
+			
+			else if(lab.equals("Back"))    				//处理"Back"按钮事件
+			{
+				sBuffer.deleteCharAt(sBuffer.length() - 1);
+				text.setText(sBuffer.toString());
+			}
+			else if(lab.equals("C"))                   //处理"C"按钮事件
+			{
+				sBuffer = new StringBuffer();			
+				text.setText(sBuffer.toString());
+			}
+			else if(lab.equals("."))					// 处理按钮 "." 事件
+			{
+				sBuffer.append(".");						
+				text.setText(sBuffer.toString());			
+			}
+			
+			else if(lab.equals("+"))	//处理+"按钮事件
+			{
+				a = Double.parseDouble(sBuffer.toString());	
+				i=0;
+				sBuffer = new StringBuffer();					
+				text.setText("+");
+			}
+			else if(lab.equals("—"))		//处理"—"按钮
+			{
+				a = Double.parseDouble(sBuffer.toString());
+				i=1;
+				sBuffer = new StringBuffer();								
+				text.setText("—");
+			}
+			else if(lab.equals("x"))    	//处理"x"按钮
+			{										
+				a = Double.parseDouble(sBuffer.toString());
+				i=2;
+				sBuffer = new StringBuffer();
+				text.setText("x");
+			}
+			else if(lab.equals("÷"))		//处理"÷"按钮事件
+			{
+				i=3;
+				a = Double.parseDouble(sBuffer.toString());
+				sBuffer = new StringBuffer();
+				text.setText("÷");
+			}
+			
+			else if(lab.equals("%"))	//处理取余运算
+			{
+				a = Double.parseDouble(sBuffer.toString());
+				i=4;
+				sBuffer = new StringBuffer();
+				text.setText("%");
+			}
+			else if(lab.equals("e"))	//处理乘方运算
+			{
+				a = Double.parseDouble(sBuffer.toString());
+				i=5;
+				sBuffer = new StringBuffer();
+				text.setText("e");
+			}
+			else if(lab.equals("="))
+			{
+				b = Double.parseDouble(sBuffer.toString());
+				if (i == 0)			//加法 a+b
+					{
+						sum=a+b;
+						text.setText(String.valueOf(sum));
+						sBuffer = new StringBuffer();
+						sBuffer.append(sum);
+					} 
+				else if (i == 1) 	//减法  a-b
+					{
+						sum = a - b;
+						text.setText(String.valueOf(sum));
+						sBuffer = new StringBuffer();
+						sBuffer.append(sum);
+					}
+				else if (i == 2) 	//乘法  a*b
+					{
+						sum = a * b;
+						text.setText(String.valueOf(sum));
+						sBuffer = new StringBuffer();
+						sBuffer.append(sum);
+					} 
+				else if (i == 3) 	//除法 a÷b
+					{
+						sum = a / b;
+						text.setText(String.valueOf(sum));
+						sBuffer = new StringBuffer();
+						sBuffer.append(sum);
+					} 
+				else if (i == 4)	 //	取余      a%b
+					{
+						sum=a % b;
+						int m=(int)a;
+						int n=(int)b;
+						sum=(double)m % n;
+						text.setText(String.valueOf(sum));
+						sBuffer = new StringBuffer();
+						sBuffer.append(sum);
+					} 
+				else if (i == 5) 	//乘方 a底数 b指数
+				 {
+					 sum=1.0;
+					 if(b==0)
+						 sum=1.0;
+					 else
+						 for(int i=1;i<=b;i++)
+						  sum=sum*a;
+						text.setText(String.valueOf(sum));
+						sBuffer = new StringBuffer();
+						sBuffer.append(sum);
+					} 
+				 else 
+					text.setText(sBuffer.toString());
+			}
 	}
 }
-- 
Gitee