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poissoncalc.java
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import java.awt.HeadlessException;
import javax.swing.JOptionPane;
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author Anna
*/
public class calculator_form extends javax.swing.JFrame {
/**
* Creates new form calculator_form
*/
public calculator_form() {
initComponents();
}
/**
* This method is called from within the constructor to initialize the form.
* WARNING: Do NOT modify this code. The content of this method is always
* regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
l_label = new javax.swing.JLabel();
x_label = new javax.swing.JLabel();
t_label = new javax.swing.JLabel();
lamda_input = new javax.swing.JTextField();
x_input = new javax.swing.JTextField();
t_input = new javax.swing.JTextField();
x_arrivals = new javax.swing.JButton();
max_x_arrivals = new javax.swing.JButton();
min_x_arrivals = new javax.swing.JButton();
k1_to_k2_arrivals = new javax.swing.JButton();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jLabel6 = new javax.swing.JLabel();
jLabel7 = new javax.swing.JLabel();
result_1 = new javax.swing.JTextField();
result_2 = new javax.swing.JTextField();
result_3 = new javax.swing.JTextField();
result_4 = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
l_label.setText("lamda");
x_label.setText("x");
t_label.setText("t");
lamda_input.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
lamda_inputActionPerformed(evt);
}
});
x_input.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
x_inputActionPerformed(evt);
}
});
t_input.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
t_inputActionPerformed(evt);
}
});
x_arrivals.setText("calculate prob. for x arrivals");
x_arrivals.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
x_arrivalsActionPerformed(evt);
}
});
max_x_arrivals.setText("calculate prob. for max x arrivals");
max_x_arrivals.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
max_x_arrivalsActionPerformed(evt);
}
});
min_x_arrivals.setText("calculate prob. for min x arrivals");
min_x_arrivals.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
min_x_arrivalsActionPerformed(evt);
}
});
k1_to_k2_arrivals.setText("calculate prob for k1 to k2 arrivals");
jLabel4.setText("answer:");
jLabel5.setText("answer:");
jLabel6.setText("answer:");
jLabel7.setText("answer:");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(20, 20, 20)
.addComponent(l_label))
.addComponent(lamda_input, javax.swing.GroupLayout.PREFERRED_SIZE, 73, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(61, 61, 61)
.addComponent(x_input, javax.swing.GroupLayout.PREFERRED_SIZE, 73, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createSequentialGroup()
.addGap(97, 97, 97)
.addComponent(x_label)))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(102, 102, 102)
.addComponent(t_input, javax.swing.GroupLayout.DEFAULT_SIZE, 68, Short.MAX_VALUE)
.addGap(25, 25, 25))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(t_label, javax.swing.GroupLayout.PREFERRED_SIZE, 44, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())))
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(k1_to_k2_arrivals, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(min_x_arrivals, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(max_x_arrivals, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(x_arrivals, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel5)
.addComponent(jLabel4)
.addComponent(jLabel6)
.addComponent(jLabel7))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(result_1)
.addComponent(result_2)
.addComponent(result_3)
.addComponent(result_4))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(l_label)
.addComponent(x_label)
.addComponent(t_label))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(lamda_input, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(x_input, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(t_input, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(40, 40, 40)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(x_arrivals)
.addComponent(jLabel4)
.addComponent(result_1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(max_x_arrivals)
.addComponent(jLabel5)
.addComponent(result_2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(min_x_arrivals)
.addComponent(jLabel6)
.addComponent(result_3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(k1_to_k2_arrivals)
.addComponent(jLabel7)
.addComponent(result_4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(63, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void x_inputActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void max_x_arrivalsActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int x ;
double lamda , t;
x=Integer.parseInt(this.x_input.getText());
lamda=Double.parseDouble(this.lamda_input.getText());
t=Double.parseDouble(this.t_input.getText());
double poisson;
double k=0;
if( x>=0 && lamda>=0 && t>=0) {
poisson=Math.pow(Math.E,-lamda*t)*Math.pow(lamda*t,x)/factorial(x);
for (int i=0;i<=x;i++){
k=k+poisson;
}
result_2.setText(String.valueOf(k));
}
}
private void lamda_inputActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void t_inputActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void x_arrivalsActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int x ;
double lamda , t;
x=Integer.parseInt(this.x_input.getText());
lamda=Double.parseDouble(this.lamda_input.getText());
t=Double.parseDouble(this.t_input.getText());
double poisson=0;
if( x>=0 && lamda>=0 && t>=0) {
poisson=Math.pow(Math.E,-lamda*t)*Math.pow(lamda*t,x)/factorial(x);
}
else {
JOptionPane.showMessageDialog(this,"negative numbers not accepted","Bad Value",JOptionPane.ERROR_MESSAGE);
}//end else
result_1.setText(String.valueOf(poisson));
}
private void min_x_arrivalsActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
int x ;
double lamda , t;
x=Integer.parseInt(this.x_input.getText());
lamda=Double.parseDouble(this.lamda_input.getText());
t=Double.parseDouble(this.t_input.getText());
double poisson;
double k=0;
if( x>=0 && lamda>=0 && t>=0) {
poisson=Math.pow(Math.E,-lamda*t)*Math.pow(lamda*t,x)/factorial(x);
for (int i=0;i<=x;i++){
k=k+poisson;
}
result_2.setText(String.valueOf(1-k));
}
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(calculator_form.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(calculator_form.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(calculator_form.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(calculator_form.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new calculator_form().setVisible(true);
}
});
}
public static int factorial(int x){
int fact = 1;
if (x>0){
for (int i=1; i<x ; i++){
fact=x*i;
}//end for
}
//end if
else if (x==0){
fact=1;
}
return fact;
}//end factorial
// Variables declaration - do not modify
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JButton k1_to_k2_arrivals;
private javax.swing.JLabel l_label;
private javax.swing.JTextField lamda_input;
private javax.swing.JButton max_x_arrivals;
private javax.swing.JButton min_x_arrivals;
private javax.swing.JTextField result_1;
private javax.swing.JTextField result_2;
private javax.swing.JTextField result_3;
private javax.swing.JTextField result_4;
private javax.swing.JTextField t_input;
private javax.swing.JLabel t_label;
private javax.swing.JButton x_arrivals;
private javax.swing.JTextField x_input;
private javax.swing.JLabel x_label;
// End of variables declaration
}