java诺基亚5200手机计算器

2024-06-13 23:59:49

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?ֻ???????

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

java诺基亚5200手机计算器

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);

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);

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);

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);

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