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java诺基亚5200手机计算器
zmhk 2024-05-29 人已围观
简介java诺基亚5200手机计算器 很高兴能够参与这个java诺基亚5200手机计算器问题集合的解答工作。我将根据自己的知识和经验,为每个问题提供准确而有用的回答,并尽量满足大家的需求。1.javaŵ????5200?
很高兴能够参与这个java诺基亚5200手机计算器问题集合的解答工作。我将根据自己的知识和经验,为每个问题提供准确而有用的回答,并尽量满足大家的需求。
1.javaŵ????5200?ֻ???????
2.用JAVA编写一个计算器
3.JAVA 编写计算器 要代码最简单的
4.诺基亚5200
javaŵ????5200?ֻ???????
然后 通过输入 显示结果,比如说:以下是上图计算器的代码:
package?Computer;
import?java.awt.BorderLayout;
import?java.awt.Color;
import?java.awt.Container;
import?java.awt.Font;
import?java.awt.GridLayout;
import?java.awt.event.ActionEvent;
import?java.awt.event.ActionListener;
import?java.util.Stack;
import?javax.swing.JApplet;
import?javax.swing.JButton;
import?javax.swing.JFrame;
import?javax.swing.JPanel;
import?javax.swing.JTextField;
public?class?Count?extends?JApplet?implements?ActionListener
{
/**?
*
*/
private?static?final?long?serialVersionUID?=?1L;
private?JTextField?textField?=?new?JTextField("请输入");
String?operator?=?"";//操作
String?input?=?"";//输入的?式子
boolean?flag?=true;
//boolean?flag1?=?true;
//boolean?flag2?=?true;
public?void?init()//覆写Applet里边的init方法
{
Container?C?=?getContentPane();
JButton?b[]?=?new?JButton[16];
JPanel?panel?=?new?JPanel();
C.add(textField,?BorderLayout.NORTH);
C.add(panel,BorderLayout.CENTER);
panel.setLayout(new?GridLayout(4,?4,5,5));
String?name[]={"7","8","9","+","4","5","6","-","1","2","3","*","0","C","=","/"};//设置?按钮
for(int?i=0;i<16;i++)//添加按钮
{
b[i]?=?new?JButton(name[i]);
b[i].setBackground(new?Color(192,192,192));
b[i].setForeground(Color.BLUE);//数字键?设置为?蓝颜色
if(i%4==3)
b[i].setForeground(Color.RED);
b[i].setFont(new?Font("宋体",Font.PLAIN,16));//设置字体格式
panel.add(b[i]);
b[i].addActionListener(this);
}
b[13].setForeground(Color.RED);//非数字键,即运算键设置为红颜色
b[13].setForeground(Color.RED);
}
public?void?actionPerformed(ActionEvent?e)?
{
int?cnt?=?0;
String?actionCommand?=?e.getActionCommand();
if(actionCommand.equals("+")||actionCommand.equals("-")||actionCommand.equals("*")?||actionCommand.equals("/"))
input?+="?"+actionCommand+"?";//设置输入,把输入的样式改成?需要的样子
else?if(actionCommand.equals("C"))
input?=?"";
else?if(actionCommand.equals("="))//当监听到等号时,则处理?input
{
input+=?"="+compute(input);
textField.setText(input);
input="";
cnt?=?1;
}
else
input?+=?actionCommand;//数字为了避免多位数的输入?不需要加空格
if(cnt==0)
textField.setText(input);
}
private?String?compute(String?input)//即1237?的?样例
{
String?str[];
str?=?input.split("?");
Stack<Double>?s?=?new?Stack<Double>();
double?m?=?Double.parseDouble(str[0]);
s.push(m);
for(int?i=1;i<str.length;i++)
{
if(i%2==1)
{
if(str[i].compareTo("+")==0)
{
double?help?=?Double.parseDouble(str[i+1]);
s.push(help);
}
if(str[i].compareTo("-")==0)
{
double?help?=?Double.parseDouble(str[i+1]);
s.push(-help);
}
if(str[i].compareTo("*")==0)
{
double?help?=?Double.parseDouble(str[i+1]);
double?ans?=?s.peek();//取出栈顶元素
s.pop();//消栈
ans*=help;
s.push(ans);
}
if(str[i].compareTo("/")==0)
{
double?help?=?Double.parseDouble(str[i+1]);
double?ans?=?s.peek();
s.pop();
ans/=help;
s.push(ans);
}
}
}
double?ans?=?0d;
while(!s.isEmpty())
{
ans+=s.peek();
s.pop();
}
String?result?=?String.valueOf(ans);
return?result;
}
public?static?void?main(String?args[])
{
JFrame?frame?=?new?JFrame("Count");
Count?applet?=?new?Count();
frame.getContentPane().add(applet,?BorderLayout.CENTER);
applet.init();//applet的init方法
applet.start();//线程开始
frame.setSize(350,?400);//设置窗口大小
frame.setVisible(true);//设置窗口可见
}
} ?
用JAVA编写一个计算器
import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.Color;
import java.awt.Dialog;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.GridLayout;
import java.awt.Label;
import java.awt.Menu;
import java.awt.MenuBar;
import java.awt.MenuItem;
import java.awt.Panel;
import java.awt.TextField;
import java.awt.Toolkit;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.StringSelection;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
public class Calculator extends Frame implements ActionListener {
private String s_show;
private String s_go;
Panel p1 = new Panel();
Panel p2 = new Panel();
Panel p3=new Panel();
Oper do1 = new Oper();
TextField textfields = new TextField(27);
Dialog dlog=new Dialog(this,"about us");
Label aboutlab=new Label();
String s1;
String sedit;
Button buttons1 = new Button("Backspace");
int screenWidth,screenHeight;
Clipboard clp=Toolkit.getDefaultToolkit().getSystemClipboard();
Calculator() {
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
MenuBar mbr=new MenuBar();
setMenuBar(mbr);
Menu edit=new Menu(" do ");
MenuItem copy=new MenuItem("Copy Ctrl+C");
MenuItem zhantie=new MenuItem(" Ctrl+V");
MenuItem exit=new MenuItem("Close Alt+F4");
edit.add(copy);
edit.add(zhantie);
mbr.add(edit);
Menu help=new Menu(" help ");
MenuItem help1=new MenuItem("help theme");
MenuItem about=new MenuItem("about us");
dlog.setAlwaysOnTop(true);
dlog.setResizable(false);
//dlog.setEnabled(false);
s1="学习时兴趣小组做的";
aboutlab.setSize(200, 150);
aboutlab.setText(s1);
dlog.add(aboutlab);
about.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
dlog.setVisible(true);
}
});
dlog.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){
dlog.setVisible(false);
}
});
help.add(help1);
help.add(about);
mbr.add(help);
p1.setBackground(Color.lightGray);
p1.setForeground(Color.red);
p2.setBackground(Color.lightGray);
p2.setForeground(Color.blue);
p1.setLayout(new FlowLayout(FlowLayout.RIGHT, 1,1));
p1.add(textfields);
p1.add(buttons1);
buttons1.addActionListener(this);
p2.setLayout(new GridLayout(5, 4, 10, 16));
this.add(p1, BorderLayout.CENTER);
this.add(p2, BorderLayout.SOUTH);
this.setTitle("Play the window");
this.setResizable(false);
this.setAlwaysOnTop(true);
/**textfields.addKeyListener(new KeyAdapter(){
public void keyTyped(KeyEvent e){
char c=e.getKeyChar();
String textfieldsstr=textfields.toString();
switch(c){
case 1:textfields.setText(textfieldsstr+1);break;
case 2:textfields.setText(textfields.toString()+2);break;
case 3:textfields.setText(textfields.toString()+3);break;
case 4:textfields.setText(textfields.toString()+4);break;
case 5:textfields.setText(textfields.toString()+5);break;
case 6:textfields.setText(textfields.toString()+6);break;
case 7:textfields.setText(textfields.toString()+7);break;
case 8:textfields.setText(textfields.toString()+8);break;
case 9:textfields.setText(textfields.toString()+9);break;
case 0:textfields.setText(textfields.toString()+0);break;
case '*':textfields.setText(textfields.toString()+"*");break;
}
/**if(e.getKeyChar()==1){
textfields.setText(textfields.toString()+1);
}
}
});*///未实现键盘监听
Toolkit tk=Toolkit.getDefaultToolkit();
Dimension screenSize = tk.getScreenSize();
screenWidth=screenSize.width;
screenHeight=screenSize.height;
this.setBounds(screenWidth/2-150, screenHeight/2-128, 300, 256);
dlog.setBounds(screenWidth/2-100, screenHeight/2-78, 200, 150);
int i, j = 0, k = 9, r1 = 0, r2 = 0, r3 = 0;
for (i = 0; i < 20; i++) {
j++;
if (j == 4) {
j = 0;
r1++;
Button buttons2_i = new Button();
p2.add(buttons2_i);
buttons2_i.setBackground(Color.cyan);
buttons2_i.addActionListener(this);
switch (r1) {
case 1:
buttons2_i.setLabel("+");
break;
case 2:
buttons2_i.setLabel("-");
break;
case 3:
buttons2_i.setLabel("*");
break;
case 4:
buttons2_i.setLabel("/");
break;
case 5:
buttons2_i.setLabel("=");
break;
}
}// endif
else // else1
{
if (i < 3) {
r2++;
Button buttons2_i = new Button(""); //
p2.add(buttons2_i);
buttons2_i.setBackground(Color.cyan);
buttons2_i.addActionListener(this);
switch (r2) {
case 1:
buttons2_i.setLabel("(");
break;
case 2:
buttons2_i.setLabel(")");
break;
case 3:
buttons2_i.setLabel("sqrt");
break;
}
}// endif
else {
if (i > 16 && i < 19) {
r3++;
Button buttons2_i = new Button("");
p2.add(buttons2_i);
buttons2_i.addActionListener(this);
switch (r3) {
case 1:
buttons2_i.setLabel(".");
break;
case 2:
buttons2_i.setLabel("CE");
break;
}
}// endif
else {
Integer name = new Integer(k);
k--;
s_show = name.toString();
Button buttons2_i = new Button(s_show);
p2.add(buttons2_i);
buttons2_i.addActionListener(this);
}
}
}// end else1
}// end for
s_show = "";
s_go = "";
this.setVisible(true);
}// end Calculator()构造方法
public void actionPerformed(ActionEvent e) {
if (e.getSource() instanceof Button) // if1
{
if (e.getActionCommand() == "CE")// Del
{
s_show = "";
s_go = "";
textfields.setText(s_show);
} else if (e.getActionCommand() == "Backspace") {
if (s_show.equals("")) {
s_go = "";
textfields.setText("");
} else {
if (s_go.length() > 0)
s_go = s_go.substring(0, s_go.length() - 1);
s_show = s_show.substring(0, s_show.length() - 1);
textfields.setText(s_show);
}
} else if (e.getActionCommand() == ".") {
if (textfields.getText().equals(""))
textfields.setText("0.");
else {
s_show += e.getActionCommand();
s_go += e.getActionCommand();
textfields.setText(s_show);
}
} else {
if (e.getActionCommand() != "=") {
if (e.getActionCommand().equals("sqrt")) {
s_show += e.getActionCommand();
s_go += e.getActionCommand();
textfields.setText(s_show);
s_go = s_go.substring(0, s_go.length() - 3);
} else {
s_show += e.getActionCommand();
s_go += e.getActionCommand();
textfields.setText(s_show);
}
} else {
s_show += e.getActionCommand();
s_go += e.getActionCommand();
textfields.setText(do1.operator(s_go)); // ().toString()
}
}// end else
}// end if1
if(e.getSource()=="copy"){
sedit=textfields.getSelectedText();
StringSelection text=new StringSelection(sedit);
clp.setContents(text, null);
}
/**else if(e.getSource()=="zhantie"){
Transferable contents=clp.getContents(this);//返回表示剪贴板当前内容的 transferable 对象。
DataFlavor flavor=DataFlavor.stringFlavor;//
String ss;
if (contents.isDataFlavorSupported(flavor)) {
try
{
int start=textfields.getSelectionStart();
int end=textfields.getSelectionEnd();
//textfields.replaceRange("",start,end);
textfields.setText(ss);
ss = (String)contents.getTransferData(flavor);
int n=textfields.getCaretPosition();
textfields.insert(ss,n);
}catch(Exception ee){
// TODO: handle exception
}
}
}*///未实现剪贴板粘贴功能
// end actionPerformed()
// end class Calculator
}
public static void main(String args[]) {
Calculator cal = new Calculator();
}
}
JAVA 编写计算器 要代码最简单的
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.SwingConstants;
public class Jisuanqi extends JFrame implements ActionListener {
/**
*
*/
private static final long serialVersionUID = 1L;
Result result = new Result(); // 定义text的面板
Number_Key number_key = new Number_Key(); // 定义按钮面板
// 当点击按钮+、-、*、/时,com = true
boolean com = false;
// 当i=0时说明是我们第一次输入,字符串text不会累加
int i = 0;
// 存放text的内容
String text = "";
// 存放点击按钮+、-、*、/之前的数值
double defbutton = 0;
// +、-、*、/的代号分别为1,2,3,4
int symbol = 0;
// 构造函数
Jisuanqi() {
super("WangJiao"); // 设定标题
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // 设定关闭窗体时退出程序
JPanel pane = new JPanel(); // 定义主面板
pane.setLayout(new BorderLayout());
setBounds(380, 220, 30, 80); // 前两个参数是在屏幕上显示的坐标,后两个是大小
// 替换图标
ImageIcon icon = new ImageIcon("F:1.GIF");
// Jisuanqi.class.getResource("APPLE.GIF")
// );
setIconImage(icon.getImage());
pane.add(result, BorderLayout.NORTH);
pane.add(number_key, BorderLayout.CENTER);
pane.add(number_key.equal, BorderLayout.SOUTH);
number_key.one.addActionListener(this); // 对1按钮添加监听事件
number_key.two.addActionListener(this); // 对2按钮添加监听事件
number_key.three.addActionListener(this); // 对3按钮添加监听事件
number_key.four.addActionListener(this); // 对4按钮添加监听事件
number_key.five.addActionListener(this); // 对5按钮添加监听事件
number_key.six.addActionListener(this); // 对6按钮添加监听事件
number_key.seven.addActionListener(this); // 对7按钮添加监听事件
number_key.eight.addActionListener(this); // 对8按钮添加监听事件
number_key.nine.addActionListener(this); // 对9按钮添加监听事件
number_key.zero.addActionListener(this); // 对0按钮添加监听事件
number_key.ce.addActionListener(this); // 对置零按钮添加监听事件
number_key.plus.addActionListener(this); // 对+按钮添加监听事件
number_key.equal.addActionListener(this); // 对=按钮添加监听事件
number_key.sub.addActionListener(this); // 对-按钮添加监听事件
number_key.mul.addActionListener(this); // 对*按钮添加监听事件
number_key.div.addActionListener(this); // 对/按钮添加监听事件
number_key.point.addActionListener(this); // 对.按钮添加监听事件
setContentPane(pane);
pack(); // 初始化窗体大小为正好盛放所有按钮
}
// 各个按钮触发的事件
public void actionPerformed(ActionEvent e) {
/*
* 如果是点击数字按钮那么先要判断是否在此之前点击了+、-、*、/、=,如果是那么com=true 如果没有com=
* false;或者是否点击数字键,如果是i = 1,如果没有 i = 0;
*/
if (e.getSource() == number_key.one) {
if (com || i == 0) {
result.text.setText("1");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "1");
}
} else if (e.getSource() == number_key.two) {
if (com || i == 0) {
result.text.setText("2");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "2");
}
} else if (e.getSource() == number_key.three) {
if (com || i == 0) {
result.text.setText("3");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "3");
}
} else if (e.getSource() == number_key.four) {
if (com || i == 0) {
result.text.setText("4");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "4");
}
} else if (e.getSource() == number_key.five) {
if (com || i == 0) {
result.text.setText("5");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "5");
}
} else if (e.getSource() == number_key.six) {
if (com || i == 0) {
result.text.setText("6");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "6");
}
} else if (e.getSource() == number_key.seven) {
if (com || i == 0) {
result.text.setText("7");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "7");
}
} else if (e.getSource() == number_key.eight) {
if (com || i == 0) {
result.text.setText("8");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "8");
}
} else if (e.getSource() == number_key.nine) {
if (com || i == 0) {
result.text.setText("9");
com = false;
i = 1;
} else {
text = result.text.getText();
result.text.setText(text + "9");
}
}
/*
* 对于0这个按钮有一定的说法,在我的程序里不会出现如00000这样的情况,我加了判断条件就是
* 如果text中的数值=0就要判断在这个数值中是否有.存在?如果有那么就在原来数值基础之上添 加0;否则保持原来的数值不变
*/
else if (e.getSource() == number_key.zero) { // result.text.getText()是得到text里内容的意思
if (com || i == 0) {
result.text.setText("0");
com = false;
i = 1;
} else {
text = result.text.getText();
if (Float.parseFloat(text) > 0 || Float.parseFloat(text) < 0) { // Float.parseFloat(text)就是类型转换了,下面都是一样
result.text.setText(text + "0");
} else {
if (text.trim().indexOf(".") == -1) {
result.text.setText(text);
} else {
result.text.setText(text + "0");
}
}
}
} else if (e.getSource() == number_key.ce) {
result.text.setText("0");
i = 0;
com = true;
// text = "";
defbutton = 0;
}
/*
* 本程序不会让一个数值中出现2个以上的小数点.具体做法是:判断是否已经存在.存在就不添加, 不存在就添加.
*/
else if (e.getSource() == number_key.point) {
if (com || i == 0) {
result.text.setText("0.");
com = false;
i = 1;
} else {
text = result.text.getText();
if (text.trim().indexOf(".") == -1) {
result.text.setText(text + ".");
} else {
result.text.setText(text);
}
}
} // 获得点击+之前的数值
else if (e.getSource() == number_key.plus) {
com = true;
i = 0;
defbutton = Double.parseDouble(result.text.getText());
symbol = 1;
} // 获得点击-之前的数值
else if (e.getSource() == number_key.sub) {
com = true;
i = 0;
defbutton = Double.parseDouble(result.text.getText());
symbol = 2;
} // 获得点击*之前的数值
else if (e.getSource() == number_key.mul) {
com = true;
i = 0;
defbutton = Double.parseDouble(result.text.getText());
System.out.println(defbutton);
symbol = 3;
} // 获得点击/之前的数值
else if (e.getSource() == number_key.div) {
com = true;
i = 0;
defbutton = Double.parseDouble(result.text.getText());
symbol = 4;
} else if (e.getSource() == number_key.equal) {
switch (symbol) {
case 1: { // 计算加法
double ad = defbutton
+ Double.parseDouble(result.text.getText());
result.text.setText(ad + "");
i = 0;
text = "";
break;
}
case 2: { // 计算减法
double ad = defbutton
- Double.parseDouble(result.text.getText());
result.text.setText(String.valueOf(ad));
i = 0;
text = "";
break;
}
case 3: { // 计算乘法
double ad = defbutton
* Double.parseDouble(result.text.getText());
result.text.setText(ad + "");
i = 0;
text = "";
break;
}
case 4: { // 计算除法
double ad = defbutton
/ Double.parseDouble(result.text.getText());
result.text.setText(ad + "");
i = 0;
text = "";
break;
}
}
System.out.println(com);
}
System.out.println(result.text.getText());
}
@SuppressWarnings("deprecation")
public static void main(String[] args) {
Jisuanqi loveyou = new Jisuanqi();
loveyou.show();
}
}
// 计算器数字按钮定义面板
class Number_Key extends JPanel {
/**
*
*/
private static final long serialVersionUID = 1L;
JButton zero = new JButton("0"); // 数字键0
JButton one = new JButton("1"); // 数字键1
JButton two = new JButton("2"); // 数字键2
JButton three = new JButton("3"); // 数字键3
JButton four = new JButton("4"); // 数字键4
JButton five = new JButton("5"); // 数字键5
JButton six = new JButton("6"); // 数字键6
JButton seven = new JButton("7"); // 数字键7
JButton eight = new JButton("8"); // 数字键8
JButton nine = new JButton("9"); // 数字键9
JButton plus = new JButton("+");
JButton sub = new JButton("-");
JButton mul = new JButton("*");
JButton div = new JButton("/");
JButton equal = new JButton("=");
JButton ce = new JButton("清零"); // 置零键
JButton point = new JButton(".");
Number_Key() {
setLayout(new GridLayout(4, 4, 1, 1)); // 定义布局管理器为网格布局
setBackground(Color.blue); // 设置背景颜色
// 添加按钮
add(one);
add(two);
add(three);
add(four);
add(five);
add(six);
add(seven);
add(eight);
add(nine);
add(zero);
add(plus);
add(sub);
add(mul);
add(div);
add(point);
add(equal);
add(ce);
}
}
// 计算器显示结果的窗体
class Result extends JPanel {
/**
*
*/
private static final long serialVersionUID = 1L;
// text先是输入和结果
JTextField text = new JTextField("0");
@SuppressWarnings("deprecation")
Result() { // 讲输入的数字或得到的结果在text的右边显示
text.setHorizontalAlignment(SwingConstants.RIGHT);
text.enable(false); // 文本框不能编辑
setLayout(new BorderLayout()); // 设定布局管理器边框布局
add(text, BorderLayout.CENTER); // text放置在窗体的中间
}
}
直接复制 保存成Jisuanqi .java可以直接运行了
诺基亚5200
学java的时候自己编的,很简单,能够连续输入计算式后进行计算
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.NumberFormat;
import java.util.ArrayList;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
/**简易计算器,能够进行简单的计算
*
* @see 2008.12.9
*/
public class CalculatorA
implements ActionListener{
private JFrame frame;
private JTextField field;
private JButton[] allButtons;
private JButton clearButton;
// private JButton backButton;
String result="";//保存结果
StringBuilder sb = new StringBuilder();//保存要进行的计算式
int x = 0; //用来判断上一次的事件类型
String str = "123+456-789*0.=/";
ArrayList<String> arrayList = new ArrayList<String>();//保存计算式,通过方法进行运算
public CalculatorA(){
frame = new JFrame("我的计算器v1.1");
frame.setLocation(300,300);
field = new JTextField(25);
allButtons = new JButton[16];
for(int i=0;i<allButtons.length;i++){
allButtons[i]= new JButton(str.substring(i,i+1));
}
clearButton = new JButton("CLEAR");
// backButton = new JButton("<——");
init();
setFondAndColor();
addEventHander();
}
public void init(){
frame.setLayout(new BorderLayout());
JPanel northPanel = new JPanel();
JPanel centerPanel = new JPanel();
JPanel southPanel = new JPanel();
northPanel.setLayout(new FlowLayout());
centerPanel.setLayout(new GridLayout(4,4));
southPanel.setLayout(new FlowLayout());
northPanel.add(field);
for(int i=0;i<allButtons.length;i++){
centerPanel.add(allButtons[i]);
}
southPanel.add(clearButton);
//southPanel.add(backButton);
frame.add(northPanel,BorderLayout.NORTH);
frame.add(centerPanel,BorderLayout.CENTER);
frame.add(southPanel,BorderLayout.SOUTH);
}
//设置输入字体
public void setFondAndColor(){
field.setFont(new Font("宋体",Font.BOLD,24));
field.setBackground(new Color(100,200,200));
field.setForeground(Color.RED);
//设置字体从右起始
field.setHorizontalAlignment(JTextField.RIGHT);
}
public void showMi(){
frame.pack();
frame.setResizable(false);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public void addEventHander(){
for(int i=0;i<allButtons.length;i++){
allButtons[i].addActionListener(this);
}
clearButton.addActionListener(this);
// backButton.addActionListener(this);
}
@Override
public void actionPerformed(ActionEvent e) {
String str = e.getActionCommand();//取得当前事件返回的值
if("0123456789.".indexOf(str)!=-1){
if(x == 0){ //当x为0时表示还没有进行输入
result=str;
sb.append(str);
field.setText(str);
x = 1;
}
else if(x == 1){
result = result +str;
sb.append(str);
field.setText(result);
x = 1;
}
else if(x == 2){
sb.delete(0,sb.length());
result = result+str;
sb.append(str);
field.setText(result);
x = 1;
}
else if(x == 3){
result = str;
sb.delete(0,sb.length());
arrayList.clear();
field.setText(str);
sb.append(str);
field.setText(str);
x = 1;
}
else if(x == 4){
result ="";
sb.delete(0,sb.length());
arrayList.clear();
result = str;
sb.append(str);
field.setText(str);
x = 1;
}
else{
result = result +str;
sb.append(str);
field.setText(result);
x = 1;
}
}
else if("+*-/".indexOf(str)!=-1){
if(x == 0){
field.setText("");
x = 2;
}
else if(x == 1){
result = result + str;
arrayList.add(sb.toString());
arrayList.add(str);
sb.append(str);
field.setText(result);
x = 2;
}
else if(x == 2){
x = 2;
}
else if(x == 3){
field.setText(result+str);
arrayList.add(result);
arrayList.add(str);
result = result+str;
x = 2;
}
else if(x == 4){
result ="";
sb.delete(0,sb.length());
arrayList.clear();
x = 2;
}
else{
field.setText(result+str);
arrayList.add(result);
arrayList.add(str);
result = result+str;
x = 2;
}
}
else if("=".equals(str)){
if(x == 0){
field.setText("0");
arrayList.clear();
result = "0";
x = 3;
}
else if(x == 1){
try{
arrayList.add(sb.toString());
arrayList = getResult(arrayList);
result = arrayList.get(0);
field.setText(result);
arrayList.clear();
x = 3;
}catch(Exception e1){
field.setText("数据格式异常");
x = 0;
}
}
else if(x == 2){
field.setText("数据格式错误.....");
arrayList.clear();
x = 0;
}
else if(x == 3){
field.setText(result);
x = 3;
}
else if(x == 4){
result ="";
sb.delete(0,sb.length());
arrayList.clear();
x = 3;
}
else {
try{
arrayList.add(sb.toString());
arrayList = getResult(arrayList);
result = arrayList.get(0);
field.setText(result);
arrayList.clear();
x = 3;
}catch(Exception e1){
field.setText("数据格式异常");
x = 0;
}
}
}
else if("CLEAR".equals(str)){
arrayList.clear();
field.setText("0");
arrayList.add("0");
x = 4;
}
else{
if(result.length()>1){
result = result.substring(0,result.length()-1);
if(sb.length()>0){
sb.delete(sb.length()-1,sb.length());
}
else {
sb.delete(0,1);
}
field.setText(result);
x = 5;
}
else{
result = "";
sb.delete(0,sb.length());
arrayList.clear();
field.setText("0");
x = 0;
}
}
}
public static ArrayList<String> getResult(ArrayList<String> list){
String res = null;
String[] s = {"/","*","-","+"};
int i=0;
if(list.size()>1){
for(;i<s.length;){
if(s[i].equals("/")){
for(int j=0;j<list.size();j++){
if(list.get(j).equals(s[i])){
res = Double.toString(Double.parseDouble(list.get(j-1))/Double.parseDouble(list.get(j+1)));
//本地的数据格式
NumberFormat nf = NumberFormat.getInstance();
res = nf.format(Double.parseDouble(res));
res = getChange(res);
list.set(j-1,res);
list.remove(j);
list.remove(j);
getResult(list);
}
}
i++;
}
else if(s[i].equals("*")){
for(int j=0;j<list.size();j++){
if(list.get(j).equals(s[i])){
res = Double.toString(Double.parseDouble(list.get(j-1))*Double.parseDouble(list.get(j+1)));
NumberFormat nf = NumberFormat.getInstance();
res = nf.format(Double.parseDouble(res));
res = getChange(res);
list.set(j-1,res);
list.remove(j);
list.remove(j);
getResult(list);
}
}
i++;
}
else if(s[i].equals("-")){
for(int j=0;j<list.size();j++){
if(list.get(j).equals(s[i])){
res = Double.toString(Double.parseDouble(list.get(j-1))-Double.parseDouble(list.get(j+1)));
NumberFormat nf = NumberFormat.getNumberInstance();
res = nf.format(Double.parseDouble(res));
res = getChange(res);
list.set(j-1,res);
list.remove(j);
list.remove(j);
getResult(list);
}
}
i++;
}
else {
for(int j=0;j<list.size();j++){
if(list.get(j).equals(s[i])){
res = Double.toString(Double.parseDouble(list.get(j-1))+Double.parseDouble(list.get(j+1)));
NumberFormat nf = NumberFormat.getInstance();
res = nf.format(Double.parseDouble(res));
res = getChange(res);
list.set(j-1,res);
list.remove(j);
list.remove(j);
getResult(list);
}
}
i++;
}
}
}
return list;
}
//对数字字符串进行排除不必要符号
public static String getChange(String res){
String s_temp = "";
char[] c = new char[res.length()];
for(int k=0;k<c.length;k++){
c[k] = res.charAt(k);
}
for(int k=0;k<c.length;k++){
if((c[k]>= '0' && c[k]<= '9')|| c[k] == '.'){
s_temp += c[k];
}
}
return s_temp;
}
public static void main(String[] args){
new CalculatorA().showMi();
}
}
诺基亚5200简介:
诺基亚5200是诺基亚公司于2006年10月推出的采用了塞班S40操作系统的,基于GSM网络的音乐手机。诺基亚5200机身边线简洁,边角圆润处理衬托机身轻盈匀称,红白色的颜色搭配匠心独具。该机搭载有1.8寸的屏幕,128×160分辨率,显示效果还算不错。内置的30万像素CMOS摄像头,支持4倍数码变焦,并拥有视频拍摄功能和横向全屏模式摄像机功能。屏幕旁边配备了音乐操控键,可进行音乐的暂停,播放,非常的便捷。
操作系统:Symbian OS
蓝牙传输:支持
存储卡:MicroSD卡
视频播放:支持3GP/MPEG-4等格式
手机类型:音乐手机
上市日期:2006年10月
输入方式:键盘
手机昵称:5200
主屏材质:CSTN
基本参数
手机昵称:5200
上市日期:2006年10月
手机类型:音乐手机
外观设计:滑盖
主屏材质:CSTN
主屏分辨率:128×160像素
主屏色彩:26万色
网络模式:GSM
数据业务:GPRS
支持频段:GSM 900/1800/1900MHz
操作系统:Symbian OS
用户界面:Symbian S40
存储卡:MicroSD卡
扩展容量:2GB
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