Simple Calculator Program In Java Rmi

Calculator in Java with Source Code: We can develop calculator in java with the help of AWT/Swing with event handling. Let's see the code of creating calculator in java.

Simple Calculator Program In Visual Basic 6 0
Simple Calculator Java Program
Simple Calculator Program In Python

/*********************************************Save this file as MyCalculator.javato compile it use javac MyCalculator.javato use the calcuator do this java MyCalculator**********************************************/import java.awt.*;import java.awt.event.*;/*********************************************/public class MyCalculator extends Frame{public boolean setClear=true;double number, memValue;char op;String digitButtonText[] = {'7', '8', '9', '4', '5', '6', '1', '2', '3', '0', '+/-', '.' };String operatorButtonText[] = {'/', 'sqrt', '*', '%', '-', '1/X', '+', '=' };String memoryButtonText[] = {'MC', 'MR', 'MS', 'M+' };String specialButtonText[] = {'Backspc', 'C', 'CE' };MyDigitButton digitButton[]=new MyDigitButton[digitButtonText.length];MyOperatorButton operatorButton[]=new MyOperatorButton[operatorButtonText.length];MyMemoryButton memoryButton[]=new MyMemoryButton[memoryButtonText.length];MySpecialButton specialButton[]=new MySpecialButton[specialButtonText.length];Label displayLabel=new Label('0',Label.RIGHT);Label memLabel=new Label(' ',Label.RIGHT);final int FRAME_WIDTH=325,FRAME_HEIGHT=325;final int HEIGHT=30, WIDTH=30, H_SPACE=10,V_SPACE=10;final int TOPX=30, TOPY=50;///////////////////////////MyCalculator(String frameText)//constructor{super(frameText);int tempX=TOPX, y=TOPY;displayLabel.setBounds(tempX,y,240,HEIGHT);displayLabel.setBackground(Color.BLUE);displayLabel.setForeground(Color.WHITE);add(displayLabel);memLabel.setBounds(TOPX, TOPY+HEIGHT+ V_SPACE,WIDTH, HEIGHT);add(memLabel);// set Co-ordinates for Memory ButtonstempX=TOPX; y=TOPY+2*(HEIGHT+V_SPACE);for(int i=0; i<memoryButton.length; i++){memoryButton[i]=new MyMemoryButton(tempX,y,WIDTH,HEIGHT,memoryButtonText[i], this);memoryButton[i].setForeground(Color.RED);y+=HEIGHT+V_SPACE;}//set Co-ordinates for Special ButtonstempX=TOPX+1*(WIDTH+H_SPACE); y=TOPY+1*(HEIGHT+V_SPACE);for(int i=0;i<specialButton.length;i++){specialButton[i]=new MySpecialButton(tempX,y,WIDTH*2,HEIGHT,specialButtonText[i], this);specialButton[i].setForeground(Color.RED);tempX=tempX+2*WIDTH+H_SPACE;}//set Co-ordinates for Digit Buttonsint digitX=TOPX+WIDTH+H_SPACE;int digitY=TOPY+2*(HEIGHT+V_SPACE);tempX=digitX; y=digitY;for(int i=0;i<digitButton.length;i++){digitButton[i]=new MyDigitButton(tempX,y,WIDTH,HEIGHT,digitButtonText[i], this);digitButton[i].setForeground(Color.BLUE);tempX+=WIDTH+H_SPACE;if((i+1)%30){tempX=digitX; y+=HEIGHT+V_SPACE;}}//set Co-ordinates for Operator Buttonsint opsX=digitX+2*(WIDTH+H_SPACE)+H_SPACE;int opsY=digitY;tempX=opsX; y=opsY;for(int i=0;i<operatorButton.length;i++){tempX+=WIDTH+H_SPACE;operatorButton[i]=new MyOperatorButton(tempX,y,WIDTH,HEIGHT,operatorButtonText[i], this);operatorButton[i].setForeground(Color.RED);if((i+1)%20){tempX=opsX; y+=HEIGHT+V_SPACE;}}addWindowListener(new WindowAdapter(){public void windowClosing(WindowEvent ev){System.exit(0);}});setLayout(null);setSize(FRAME_WIDTH,FRAME_HEIGHT);setVisible(true);}//////////////////////////////////static String getFormattedText(double temp){String resText='+temp;if(resText.lastIndexOf('.0')>0) resText=resText.substring(0,resText.length()-2);return resText;}////////////////////////////////////////public static void main(String []args){new MyCalculator('Calculator - JavaTpoint');}}/*******************************************/class MyDigitButton extends Button implements ActionListener{MyCalculator cl;//////////////////////////////////////////MyDigitButton(int x,int y, int width,int height,String cap, MyCalculator clc){super(cap);setBounds(x,y,width,height);this.cl=clc;this.cl.add(this);addActionListener(this);}////////////////////////////////////////////////static boolean isInString(String s, char ch){for(int i=0; i<s.length();i++) if(s.charAt(i)ch) return true;return false;}/////////////////////////////////////////////////public void actionPerformed(ActionEvent ev){String tempText=((MyDigitButton)ev.getSource()).getLabel();if(tempText.equals('.')){ if(cl.setClear) {cl.displayLabel.setText('0.');cl.setClear=false;} else if(!isInString(cl.displayLabel.getText(),'.')) cl.displayLabel.setText(cl.displayLabel.getText()+'.'); return;}int index=0;try{ index=Integer.parseInt(tempText); }catch(NumberFormatException e){return;}if (index0 && cl.displayLabel.getText().equals('0')) return;if(cl.setClear) {cl.displayLabel.setText('+index);cl.setClear=false;}else cl.displayLabel.setText(cl.displayLabel.getText()+index);}//actionPerformed}//class defination/********************************************/class MyOperatorButton extends Button implements ActionListener{MyCalculator cl;MyOperatorButton(int x,int y, int width,int height,String cap, MyCalculator clc){super(cap);setBounds(x,y,width,height);this.cl=clc;this.cl.add(this);addActionListener(this);}///////////////////////public void actionPerformed(ActionEvent ev){String opText=((MyOperatorButton)ev.getSource()).getLabel();cl.setClear=true;double temp=Double.parseDouble(cl.displayLabel.getText());if(opText.equals('1/x')) { try {double tempd=1/(double)temp; cl.displayLabel.setText(MyCalculator.getFormattedText(tempd));} catch(ArithmeticException excp) {cl.displayLabel.setText('Divide by 0.');} return; }if(opText.equals('sqrt')) { try {double tempd=Math.sqrt(temp); cl.displayLabel.setText(MyCalculator.getFormattedText(tempd));} catch(ArithmeticException excp) {cl.displayLabel.setText('Divide by 0.');} return; }if(!opText.equals('=')) { cl.number=temp; cl.op=opText.charAt(0); return; }// process = button pressedswitch(cl.op){case '+': temp+=cl.number;break;case '-': temp=cl.number-temp;break;case '*': temp*=cl.number;break;case '%': try{temp=cl.number%temp;} catch(ArithmeticException excp) {cl.displayLabel.setText('Divide by 0.'); return;} break;case '/': try{temp=cl.number/temp;} catch(ArithmeticException excp) {cl.displayLabel.setText('Divide by 0.'); return;} break;}//switchcl.displayLabel.setText(MyCalculator.getFormattedText(temp));//cl.number=temp;}//actionPerformed}//class/****************************************/class MyMemoryButton extends Button implements ActionListener{MyCalculator cl;/////////////////////////////////MyMemoryButton(int x,int y, int width,int height,String cap, MyCalculator clc){super(cap);setBounds(x,y,width,height);this.cl=clc;this.cl.add(this);addActionListener(this);}////////////////////////////////////////////////public void actionPerformed(ActionEvent ev){char memop=((MyMemoryButton)ev.getSource()).getLabel().charAt(1);cl.setClear=true;double temp=Double.parseDouble(cl.displayLabel.getText());switch(memop){case 'C': cl.memLabel.setText(' ');cl.memValue=0.0;break;case 'R': cl.displayLabel.setText(MyCalculator.getFormattedText(cl.memValue));break;case 'S': cl.memValue=0.0;case '+': cl.memValue+=Double.parseDouble(cl.displayLabel.getText()); if(cl.displayLabel.getText().equals('0') || cl.displayLabel.getText().equals('0.0') ) cl.memLabel.setText(' '); else cl.memLabel.setText('M'); break;}//switch}//actionPerformed}//class/*****************************************/class MySpecialButton extends Button implements ActionListener{MyCalculator cl;MySpecialButton(int x,int y, int width,int height,String cap, MyCalculator clc){super(cap);setBounds(x,y,width,height);this.cl=clc;this.cl.add(this);addActionListener(this);}//////////////////////static String backSpace(String s){String Res=';for(int i=0; i<s.length()-1; i++) Res+=s.charAt(i);return Res;}//////////////////////////////////////////////////////////public void actionPerformed(ActionEvent ev){String opText=((MySpecialButton)ev.getSource()).getLabel();//check for backspace buttonif(opText.equals('Backspc')){String tempText=backSpace(cl.displayLabel.getText());if(tempText.equals(')) cl.displayLabel.setText('0');else cl.displayLabel.setText(tempText);return;}//check for 'C' button i.e. Resetif(opText.equals('C')) {cl.number=0.0; cl.op=' '; cl.memValue=0.0;cl.memLabel.setText(' ');}//it must be CE button pressedcl.displayLabel.setText('0');cl.setClear=true;}//actionPerformed}//class/*********************************************Features not implemented and few bugsi) No coding done for '+/-' button.ii) Menubar is not included.iii)Not for Scientific calculationiv)Some of the computation may lead to unexpected result due to the representation of Floating point numbers in computer is an approximation to the given value that can be stored physically in memory.***********************************************/

Simple Calculator Program In Visual Basic 6 0

I am coding an RMI Calculator program. I have created the following.java files. Following the guidelines, I came to the point where I have to run the service application. To do this I type. Start rmiregistry. And a new blank window opens. I then try to start the calculator service by typing the following: java CalculatorService. And then nothing happens.

Simple Calculator Java Program

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Simple Calculator Program In Visual Basic 6 0

Simple Calculator Java Program

Simple Calculator Program In Python