addButton(panel2, "8", numActionListener, Color.blue);
addButton(panel2, "9", numActionListener, Color.blue);
addButton(panel2, "÷", new Signs(), Colorutton()
private void getResult ()
public class Calucator extends JFrame
class Signs implements ActionListener
class Clear implements ActionListener
addButton(panel2, "cos", new Signs(), Color.magenta);
addButton(panel2, "x^3", new Signs(), Color.magenta);
addButton(panel2, "0", numActionListener, Color.blue);
addButton(panel2, "1/x", new Signs(), Color.magenta);
addButton(panel2, "log", new Signs(), Color.magenta);
addButton(panel2, "7", numActionListener, Color.blue);
tf.setHorizontalAlignment(JTextField.RIGHT);//文字右对齐
tf.setText("0");
tf.setBorder(BorderFactory.createLoweredBevelBorder());
init();//对计算器进行初始化
}
private void init(){
addButton(panel2, "′″", new Signs(), Color.orange);
addButton(panel2, "=", new Signs(), Color.red);
JButton btns = new JButton("计算器");
btns.setBorder(BorderFactory.createLoweredBevelBorder());
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.JTextField;
public Calucator()
private void init()
import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DecimalFormat;
public class Calucator extends JFrame {
private JTextField tf;
private JPanel panel1, panel2, panel3, panel4;
private String back;
private boolean IfResult = true, flag = false;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JRadioButtonMenuItem;
import javax.swing.JTextField;
课程设计报告书
课程名称面向对象程序设计
设计题目模拟科学计算器
专业班级软件10—04
学号1020010428
姓名余俊
指导教师李建东
2012年6月
目录
1设计时间3
2设计目的3
3设计任务3
4设计内容3
4.1需求分析3
4.1.1问题描述3
4.1.2基本要求3
4.2总体设计3
4.2.1包的描述3
4.2.2类的描述4
this.add(tf, BorderLayout.NORTH);
this.add(panel3, BorderLayout.WEST);
this.add(panel4);
pack();
this.setResizable(false);//窗口不可改变大小
addButton(panel2, "-/+", new Clear(), Color.blue);
addButton(panel2, ".", new Dot(), Color.blue);
addButton(panel2, "+", new Signs(), Color.red);
addButton(panel2, "tan", new Signs(), Color.magenta);
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.DecimalFormat;
import javax.swing.BorderFactory;
private String oper = "=";
private double result = 0;
private Num numActionListener;
private DecimalFormat df;
public Calucator(){
super("科学计算器");//设置标题栏
df = new DecimalFormat("#.####");//保留四位小数
import javax.swing.BorderFactory;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JCheckBoxMenuItem;
import javax.swing.JFrame;
addButton(panel2, "sin", new Signs(), Color.magenta);
addButton(panel2, "x^2", new Signs(), Color.magenta);
addButton(panel2, "1", numActionListener, Color.blue);
btns.setEnabled(false);//按钮不可操作
btns.setPreferredSize(new Dimension(20, 20));
panel3.add(btns);//加入按钮
addButton(panel3, "MC", null, Color.red);
addButton(panel3, "MR", null, Color.red);
addButton(panel3, "MS", null, Color.red);
addButton(panel3, "M+", null, Color.red);
panel4.add(panel1, BorderLayout.NORTH);
panel4.add(panel2, BorderLayout.CENTER);
addButton(panel2, "5", numActionListener, Color.blue);
addButton(panel2, "6", numActionListener, Color.blue);
addButton(panel2, "×", new Signs(), Color.red);
本项目需要实现一个具有四则运算的计算器，能够实现基本的加、减、乘、除、正弦、余弦和指数运算，以及其它的辅助功能；界面简洁适用。
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
this.setLayout(new BorderLayout(10, 5));
panel1 = new JPanel(new GridLayout(1, 3, 10, 10));
panel2 = new JPanel(new GridLayout(5, 6, 5, 5));//5行6列
panel3 = new JPanel(new GridLayout(5, 1, 5, 5));
4.2.3类之间的关系4
4.3详细设计5