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prev.java
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package stopwatch;
import java.io.EOFException;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.util.ArrayList;
import javax.swing.JOptionPane;
public class prev extends javax.swing.JFrame {
ArrayList<timestamp> timestamps;
public prev() {
initComponents();
timestamps=new ArrayList<timestamp>();
populateArrayList();
}
public void populateArrayList(){
try{
FileInputStream file = new FileInputStream("Timestamps.txt");
ObjectInputStream inputFile = new ObjectInputStream(file);
boolean endOfFile = false;
while(!endOfFile){
try{
timestamps.add((timestamp) inputFile.readObject());
}
catch(EOFException e){
endOfFile = true;
}
catch(Exception f){
JOptionPane.showMessageDialog(null, f.getMessage());
}
}
inputFile.close();
}
catch(IOException e){
JOptionPane.showMessageDialog(null, e.getMessage());
}
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
inputname = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
jLabel2 = new javax.swing.JLabel();
timestampdisplay = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.DISPOSE_ON_CLOSE);
jLabel1.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jLabel1.setText("Enter name of Timestamp to be displayed :");
inputname.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
jButton1.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
jButton1.setText("Show Timestamp");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jLabel2.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
jLabel2.setText("Timestamp :");
timestampdisplay.setFont(new java.awt.Font("Tahoma", 1, 18)); // NOI18N
timestampdisplay.setText("00 : 00 : 00 : 00");
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(156, 156, 156)
.addComponent(jButton1))
.addGroup(layout.createSequentialGroup()
.addGap(46, 46, 46)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel2)
.addGap(18, 18, 18)
.addComponent(timestampdisplay))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(inputname)))))
.addContainerGap(44, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(25, 25, 25)
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addComponent(inputname, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 38, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(timestampdisplay))
.addGap(54, 54, 54))
);
pack();
}// </editor-fold>//GEN-END:initComponents
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
String inputName;
inputName = inputname.getText().trim();
boolean exists = false;
if(inputName.isBlank()){
JOptionPane.showMessageDialog(null, "Please enter all fields!");
}
else {
for(int j=0;j<timestamps.size();j++){
if(timestamps.get(j).name.equals(inputName)){
exists = true;
int miliseconds = timestamps.get(j).milisec;
int seconds = timestamps.get(j).sec;
int minutes = timestamps.get(j).min;
int hours = timestamps.get(j).hrs;
String H,M,S,M_S;
if(miliseconds<10){
M_S = "0" + miliseconds;
}
else {
M_S = "" + miliseconds;
}
if(seconds<10){
S = "0" + seconds;
}
else {
S = "" + seconds;
}
if(minutes<10){
M = "0" + minutes;
}
else {
M = "" + minutes;
}
if(hours<10){
H = "0" + hours;
}
else {
H = "" + hours;
}
timestampdisplay.setText(H + " : " + M + " : " + S + " : " + M_S);
break;
}
}
if(!exists){
JOptionPane.showMessageDialog(null, "Timestamp does not exist!");
}
}
}//GEN-LAST:event_jButton1ActionPerformed
public static void main(String args[]) {
//<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(prev.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(prev.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(prev.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(prev.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new prev().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JTextField inputname;
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel timestampdisplay;
// End of variables declaration//GEN-END:variables
}