java計算器代碼帶括號 java計算器代碼帶括號怎么輸入
JAVA帶括號計算器
沒做過，提個建議。使用棧來存放數(shù)據(jù)，通過彈出棧頂元素，然后判斷()和運算符號來做。
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java 計算器代碼帶括號 求注釋
//引入各種類文件
import?java.awt.Button;
import?java.awt.Color;
import?java.awt.FlowLayout;
import?java.awt.Font;
import?java.awt.Frame;
import?java.awt.GridLayout;
import?java.awt.Panel;
import?java.awt.TextField;
import?java.awt.event.ActionEvent;
import?java.awt.event.ActionListener;
//定義JsqFrame繼承Frame
class?JsqFrame?extends?Frame?{
double?d1,?d2;??//定義兩個double類型的變量
int?op?=?-1;??//定義兩個int類型的變量
static?TextField?tf;//定義靜態(tài)對象TextField
CalPanelL?p1;??//定義CalPanelL對象
//?Constructor構(gòu)造方法
JsqFrame()?{
//以下設(shè)置屬性
super("計算器");
setLayout(new?FlowLayout());
setResizable(false);
setSize(250,?250);
tf?=?new?TextField(18);
tf.setEditable(false);
tf.setBackground(Color.lightGray);
tf.setForeground(Color.red);
tf.setFont(new?Font("Arial",?Font.BOLD,?16));
add(tf);
p1?=?new?CalPanelL();
add(p1);
setVisible(true);
//?addWindowListener(new?Wclose());
}
//添加按鈕繼承Button類
class?CalButton?extends?Button?{
CalButton(String?s)?{
//設(shè)置按鈕屬性
super(s);
setBackground(Color.WHITE);?//設(shè)置顏色為白色
}
}
//定義顯示器繼承Panel類
class?CalPanelL?extends?Panel?{
CalButton?a,?c,?b0,?b1,?b2,?b3,?b4,?b5,?b6,?b7,?b8,?b9,?bPN,?bPoint,
bAdd,?bSub,?bMul,?bDiv,?bL,?bR,?bLn,?bEqual,?bCE,?bQuit;
CalPanelL()?{
//設(shè)置顯示器的屬性
setLayout(new?GridLayout(6,?4));
setFont(new?Font("TimesRoman",?Font.BOLD,?16));
a?=?new?CalButton("");
c?=?new?CalButton("");
b0?=?new?CalButton("0");
b1?=?new?CalButton("1");
b2?=?new?CalButton("2");
b3?=?new?CalButton("3");
b4?=?new?CalButton("4");
b5?=?new?CalButton("5");
b6?=?new?CalButton("6");
b7?=?new?CalButton("7");
b8?=?new?CalButton("8");
b9?=?new?CalButton("9");
bPN?=?new?CalButton("+/-");
bPoint?=?new?CalButton(".");
//?設(shè)置按鈕
bAdd?=?new?CalButton("+");
bSub?=?new?CalButton("-");
bMul?=?new?CalButton("*");
bDiv?=?new?CalButton("/");
bL?=?new?CalButton("(");
bR?=?new?CalButton(")");
bLn?=?new?CalButton("ln");
bEqual?=?new?CalButton("=");
bCE?=?new?CalButton("CE");
bQuit?=?new?CalButton("退出");
//?加入按鈕
add(a);
add(c);
add(bCE);
bCE.addActionListener(new?PressBCE());
add(bQuit);
bQuit.addActionListener(new?PressBQuit());
add(b7);
b7.addActionListener(new?PressB7());
add(b8);
b8.addActionListener(new?PressB8());
add(b9);
b9.addActionListener(new?PressB9());
add(bDiv);
bDiv.addActionListener(new?PressBDiv());
add(b4);
b4.addActionListener(new?PressB4());
add(b5);
b5.addActionListener(new?PressB5());
add(b6);
b6.addActionListener(new?PressB6());
add(bMul);
bMul.addActionListener(new?PressBMul());
add(b1);
b1.addActionListener(new?PressB1());
add(b2);
b2.addActionListener(new?PressB2());
add(b3);
b3.addActionListener(new?PressB3());
add(bSub);
bSub.addActionListener(new?PressBSub());
add(b0);
b0.addActionListener(new?PressB0());
add(bPoint);
bPoint.addActionListener(new?PressBPoint());
add(bPN);
bPN.addActionListener(new?PressBPN());
;
add(bAdd);
bAdd.addActionListener(new?PressBAdd());
add(bL);
bL.addActionListener(new?PressBL());
add(bR);
bR.addActionListener(new?PressBR());
add(bLn);
bLn.addActionListener(new?PressBLn());
add(bEqual);
bEqual.addActionListener(new?PressBEqual());
}
}
//定義PressBAdd實現(xiàn)ActionListener
//大體的意思是按計算機按鍵的時出發(fā)的時間，設(shè)置按鍵的監(jiān)聽[加號的監(jiān)聽事件]
class?PressBAdd?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
try?{
String?d1?=?tf.getText();
op?=?0;
tf.setText(d1?+?"+");
}?catch?(Exception?ee)?{
}
}
}
//定義PressBSub實現(xiàn)ActionListener
//大體的意思是按計算機按鍵的時出發(fā)的時間，設(shè)置按鍵的監(jiān)聽[減號的監(jiān)聽事件]
class?PressBSub?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
try?{
String?d1?=?tf.getText();
op?=?1;
tf.setText(d1?+?"-");
}?catch?(Exception?ee)?{
}
}
}
//定義PressBMul實現(xiàn)ActionListener
//大體的意思是按計算機按鍵的時出發(fā)的時間，設(shè)置按鍵的監(jiān)聽[乘號的監(jiān)聽事件]
class?PressBMul?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
try?{
String?d1?=?tf.getText();
op?=?2;
tf.setText(d1?+?"*");
}?catch?(Exception?ee)?{
}
}
}
//定義PressBDiv實現(xiàn)ActionListener
//大體的意思是按計算機按鍵的時出發(fā)的時間，設(shè)置按鍵的監(jiān)聽[除號的監(jiān)聽事件]
class?PressBDiv?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
try?{
String?d1?=?tf.getText();
op?=?3;
tf.setText(d1?+?"/");
}?catch?(Exception?ee)?{
}
}
}
//定義PressBL實現(xiàn)ActionListener
//大體的意思是按計算機按鍵的時出發(fā)的時間，設(shè)置按鍵的監(jiān)聽[向左鍵的監(jiān)聽事件]
class?PressBL?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
try?{
String?d1?=?tf.getText();
op?=?3;
tf.setText(d1?+?"(");
}?catch?(Exception?ee)?{
}
}
}
//定義PressBR實現(xiàn)ActionListener
//大體的意思是按計算機按鍵的時出發(fā)的時間，設(shè)置按鍵的監(jiān)聽[向右鍵的監(jiān)聽事件]
class?PressBR?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
try?{
String?d1?=?tf.getText();
op?=?3;
tf.setText(d1?+?")");
}?catch?(Exception?ee)?{
}
}
}
//定義PressBEqual實現(xiàn)ActionListener
//大體的意思是按計算機按鍵的時出發(fā)的時間，設(shè)置按鍵的監(jiān)聽[等號的監(jiān)聽事件]
class?PressBEqual?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
try?{
Jsq?jsq?=?new?Jsq();
String?s?=?tf.getText();
System.out.println(s);
while?(s.indexOf("(")?+?1??0??s.indexOf(")")??0)?{
String?s1?=?jsq.caculateHigh(s);
System.out.println(s1);
s?=?s1;
}
String?str?=?jsq.cacluteMain(s);
System.out.println(str);
tf.setText(String.valueOf(str));
}?catch?(Exception?ee)?{
}
}
}
/*
*?批量寫吧
*?以下是按1、2、3等等的監(jiān)聽事件
*?還有清零的等等監(jiān)聽事件
*/
class?PressBLn?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
try?{
double?x?=?Double.parseDouble(tf.getText());
double?y;
y?=?Math.log10(x);
tf.setText(y?+?"");
}?catch?(Exception?ee)?{
}
}
}
class?PressBCE?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
tf.setText("");
}
}
class?PressBPN?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
try?{
String?text?=?tf.getText();
if?(text?!=?"")?{
if?(text.charAt(0)?==?'-')
tf.setText(text.substring(1));
else?if?(text.charAt(0)?=?'0'??text.charAt(0)?=?'9')
tf.setText("-"?+?text.substring(0));
else?if?(text.charAt(0)?==?'.')
tf.setText("-0"?+?text.substring(0));
}
}?catch?(Exception?ee)?{
}
}
}
class?PressBPoint?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
String?text?=?tf.getText();
if?(text.lastIndexOf(".")?==?-1)
tf.setText(text?+?".");
}
}
class?PressB0?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
String?text?=?tf.getText();
tf.setText(text?+?"0");
}
}
class?PressB1?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
String?text?=?tf.getText();
tf.setText(text?+?"1");
}
}
class?PressB2?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
String?text?=?tf.getText();
tf.setText(text?+?"2");
}
}
class?PressB3?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
String?text?=?tf.getText();
tf.setText(text?+?"3");
}
}
class?PressB4?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
String?text?=?tf.getText();
tf.setText(text?+?"4");
}
}
class?PressB5?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
String?text?=?tf.getText();
tf.setText(text?+?"5");
}
}
class?PressB6?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
String?text?=?tf.getText();
tf.setText(text?+?"6");
}
}
class?PressB7?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
String?text?=?tf.getText();
tf.setText(text?+?"7");
}
}
class?PressB8?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
String?text?=?tf.getText();
tf.setText(text?+?"8");
}
}
class?PressB9?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
String?text?=?tf.getText();
tf.setText(text?+?"9");
}
}
class?PressBQuit?implements?ActionListener?{
public?void?actionPerformed(ActionEvent?e)?{
System.exit(0);
}
}
public?void?Js()?{
String?text?=?tf.getText();
tf.setText(text);
}
}
怎么用java做一個帶括號的計算器
import?java.awt.*;?
import?java.awt.event.*;?
public?class?MyCalculator?{?
private?Frame?f;?
private?TextField?tf?=?new?TextField(30);?
private?long?result;?
private?boolean?append=false;?
private?char?operator='=';?
private?Button[]?btn=new?Button[15];?
public?MyCalculator()?{?
initComponent();?
}?
private?void?initComponent()?{?
f?=?new?Frame("My?Calculator?V1.0");?
f.setLayout(new?BorderLayout());?//The?frame?uses?BorderLayout?
f.addWindowListener(new?WindowAdapter()?{?
public?void?windowClosing(WindowEvent?evt)?{?
System.exit(0);?
}?
});?
Panel?centerPanel?=?new?Panel();?
centerPanel.setLayout(new?GridLayout(5,?3));?//The?panel?uses?GridLayout?
NumberListener?nl=new?NumberListener();?
OperatorListener?ol=new?OperatorListener();?
btn[10]=new?Button("+");?
btn[11]=new?Button("-");?
btn[12]=new?Button("*");?
btn[13]=new?Button("/");?
btn[14]=new?Button("=");?
for?(int?i=0;i=9;i++){?
btn[i]=new?Button(String.valueOf(i));?
centerPanel.add(btn[i]);?
btn[i].addActionListener(nl);?
if?(i%2==1){?
centerPanel.add(btn[(i+19)/2]);?
btn[(i+19)/2].addActionListener(ol);?
}?
}?
f.add(centerPanel,?BorderLayout.CENTER);?
Panel?northPanel?=?new?Panel();?
tf.setEditable(false);?
northPanel.add(tf);?
f.add(northPanel,?BorderLayout.NORTH);?
}?
public?void?go()?{?
f.pack();?
f.setVisible(true);?
}?
public?static?void?main(String[]?args)?{?
new?MyCalculator().go();?
}?
/**?
*采用成員內(nèi)部類方式，實現(xiàn)監(jiān)聽器接口，方便訪問主類內(nèi)類內(nèi)部成員。?
*此類負責(zé)數(shù)字按鈕Action事件監(jiān)聽和處理?
*/?
class?NumberListener?implements?ActionListener{?
public?void?actionPerformed(ActionEvent?e){?
if?(!append)?{?
tf.setText("");?
append=true;?
}?
String?s=tf.getText();?
s+=e.getActionCommand();?
tf.setText(s);?
if?(!btn[10].isEnabled()){?
for(int?i=10;i=14;i++)?btn[i].setEnabled(true);?
}?
}?
}?
/**?
*?成員內(nèi)部類，負責(zé)操作符按鈕的事件處理?
*/?
class?OperatorListener?implements?ActionListener{?
public?void?actionPerformed(ActionEvent?e){?
if?(!append)?return;?
for(int?i=10;i=14;i++)?btn[i].setEnabled(false);?
String?s=tf.getText();?
long?num=Long.parseLong(s);//get?the?number?of?textfield?
append=false;?//set?append?
switch(operator){?
case?'+':result+=num;break;?
case?'-':result-=num;break;?
case?'*':result*=num;break;?
case?'/':{?
if?(num==0)?result=0;?
else?result/=num;?
break;?
}?
case?'=':result=num;break;?
}?
tf.setText(String.valueOf(result));?
//set?the?value?of?result?to?textfield?
String?op=e.getActionCommand();?
operator=op.charAt(0);?//?set?operator?
}?
}?
}
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