java计算器求三角函数源代码 javaswing计算器

该计算器\(swing\)包实现
只实现了简单界面和基本输入
没有实现实际运算功能

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

public class Calculator extends JFrame implements ActionListener{
	JMenuItem aboutItem;
	String[] rightButton = new String[] {"7","8","9","/","4","5","6","*","1","2","3","-","0",".","=","+"};
	String[] leftButton = new String[] {"sin","and","(",")","cos","or","exp","ln","tan","xor","x^y","log","e","not","x^3","n!"};
	Font font1 = new Font("微软雅黑",Font.BOLD,30);
	Font font2 = new Font("微软雅黑",Font.BOLD,20);
	JRadioButton dec = new JRadioButton("十进制");
	JRadioButton oct = new JRadioButton("八进制");
	JRadioButton bin = new JRadioButton("二进制");
	JButton[] mainButton = new JButton[20];
	JTextField jtf = new JTextField(30);
	
	public Calculator() {
		super("计算器");
		this.setVisible(true);
		this.setBounds(300,300,1000,500);
		this.setDefaultCloseOperation(EXIT_ON_CLOSE);
		
		//Menu
		JMenuBar menuBar = new JMenuBar();
		setJMenuBar(menuBar);
		JMenu helpMenu = new JMenu("Help");
		helpMenu.setFont(font2);
		menuBar.add(helpMenu);
		aboutItem = new JMenuItem("About");
		aboutItem.setFont(font2);
		aboutItem.addActionListener(this);
		helpMenu.add(aboutItem);
		
		JPanel root = new JPanel();
		root.setLayout(new BorderLayout());
		
		JPanel center = new JPanel();
		JPanel north = new JPanel();
		north.setLayout(new FlowLayout());
		center.setLayout(new GridLayout(1,2,20,20));
		
		JPanel centerWest = new JPanel();  //左功能区
		centerWest.setLayout(new BorderLayout());
		center.add(centerWest);
		
		JPanel centerWestNorth = new JPanel();//进制选择区
		centerWestNorth.setLayout(new FlowLayout(FlowLayout.CENTER,20,5)); 
		centerWestNorth.setBorder(BorderFactory.createEtchedBorder());
		centerWest.add(centerWestNorth,BorderLayout.NORTH);
		
		ButtonGroup bg=new ButtonGroup();// 进制单选按钮组
		
		dec.setFont(font2);  //十进制
		dec.addActionListener(this);
		dec.setSelected(true);
		bg.add(dec);
		
		oct.setFont(font2);  //八进制
		oct.addActionListener(this);
		bg.add(oct);
		
		bin.setFont(font2);  //二进制
		bin.addActionListener(this);
		bg.add(bin);
		
		centerWestNorth.add(dec);
		centerWestNorth.add(oct);
		centerWestNorth.add(bin);
		
		JPanel centerWestCenter = new JPanel();//左函数区
		centerWestCenter.setLayout(new GridLayout(4,4,10,10));
		centerWest.add(centerWestCenter,BorderLayout.CENTER);
		
		for(int i=0;i<leftButton.length;i++) {
			JButton tmp = new JButton(leftButton[i]);
			tmp.setFont(font1);
			tmp.setEnabled(false);
			centerWestCenter.add(tmp);
		}
		
		JPanel centerEast = new JPanel();  //右功能区
		centerEast.setLayout(new BorderLayout());
		center.add(centerEast);

		JPanel centerEastNorth = new JPanel();  //backspace and clear button area
		centerEastNorth.setLayout(new FlowLayout(FlowLayout.CENTER,100,5));
		centerEastNorth.setBorder(BorderFactory.createEtchedBorder());
		centerEast.add(centerEastNorth,BorderLayout.NORTH);
		
		JButton cl = new JButton("CLEAR");
		cl.setFont(font2);
		cl.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				jtf.setText("");
			}
		});
		
		JButton bs = new JButton("BACKSPACE");
		bs.setFont(font2);
		bs.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				if(jtf.getText().length()!=0) {
					int end = jtf.getText().length()-1;
					jtf.setText(jtf.getText().substring(0, end));
				}
			}
		});
		
		centerEastNorth.add(bs);
		centerEastNorth.add(cl);
		
		JPanel centerEastCenter = new JPanel();  //数字键盘区
		centerEastCenter.setLayout(new GridLayout(4,4,10,10));
		centerEast.add(centerEastCenter,BorderLayout.CENTER);
		
		for(int i=0;i<rightButton.length;i++) {
			mainButton[i] = new JButton(rightButton[i]);
			mainButton[i].setFont(font1);
			String tmp = rightButton[i];
			mainButton[i].addActionListener(new ActionListener() {
				public void actionPerformed(ActionEvent e) {
					jtf.setText(jtf.getText()+tmp);
					
				}
			});
			centerEastCenter.add(mainButton[i]);
		}
		
		jtf.setFont(font1);//输入框
		jtf.setHorizontalAlignment(JTextField.RIGHT);
		north.add(jtf);

		root.add(center,BorderLayout.CENTER);
		root.add(north,BorderLayout.NORTH);

		this.setContentPane(root);
	    validate();
		
	}
	public void actionPerformed(ActionEvent event) {
		if(event.getSource()==aboutItem) {
			JOptionPane.showMessageDialog(this,"Message Dialog","Message Dialog",JOptionPane.INFORMATION_MESSAGE);
		}
		else if(event.getSource()==dec){
			for(int i=0;i<rightButton.length;i++) {
				mainButton[i].setEnabled(true);
			}
		}
		else if(event.getSource()==oct){
			for(int i=0;i<rightButton.length;i++) {
				if(i==1||i==2) {
					mainButton[i].setEnabled(false);
				}
				else {
					mainButton[i].setEnabled(true);
				}
			}
		}
		else if(event.getSource()==bin){
			for(int i=0;i<rightButton.length;i++) {
				if(i==3||i==7||i==8||i>=11) {
					mainButton[i].setEnabled(true);
				}
				else {
					mainButton[i].setEnabled(false);
				}
			}
		}
	}
	public static void main(String[] args) {
		
		new Calculator();
	}
}