Java Programming

[lestat1116]

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polo shirt n gamay na bag.

[javapenguin]

Ako mo apil ko basta barato or free, ug dili sad ko bz

[jerx d great]

java is nice!! karon pa ko ka notice! ehehehe

[cen]

java is nice!! karon pa ko ka notice! ehehehe

Naa man gihapon problem ang java bai. Nothing is perfect. Maka-sulti ra ta nga perfect ang JAVA kung solution gyud na sa problem nga atong gi-address.

[javapenguin]

I agree, there is no perfect programming language, it takes longer time to develop than other languages like VB or Delphi.

[cen]

it takes longer time to develop than other languages like VB or Delphi.

OT:
Depende ang answer. Depende sa gi-address nimo nga problem og sa developer. Naay specific nga problem nga dali ra ma-solve kung VB or Delphi. Depende sad sa developer. Takes time man sad to study new PL to solve sa gi-address nga problem. So diskarte rana sa developer kung asa siya.

[javapenguin]

OT:
Depende ang answer. Depende sa gi-address nimo nga problem og sa developer. Naay specific nga problem nga dali ra ma-solve kung VB or Delphi. Depende sad sa developer. Takes time man sad to study new PL to solve sa gi-address nga problem. So diskarte rana sa developer kung asa siya.

Sakto ka bai!

[cen]

Sakto ka bai!

Thanks! BTW Java is one of my favorite language and javapenguin is one of my favorite istoryans! :mrgreen:

[javapenguin]

Thanks! BTW Java is one of my favorite language and javapenguin is one of my favorite istoryans! :mrgreen:

likewise bro

[jerx d great]

i have these another problem! ok ra ako nasad i post dire?? ma ikog nmn ko ninyo mo konsulta oi hehehhehe!! file handling japn ni nga problem sa java....

dara ang code ai...!

import javax.swing.*;
import java.awt.event.*;
import java.awt.*;
import java.io.*;

public class Create_Record extends JFrame{

public static final int width =350;
public static final int height = 170;
JTextField tf_population;
JTextField tf_growthRate;
JTextField tf_speciesName;


public Create_Record(){

JPanel controlNorth;
JPanel North;
JPanel South;
ActionListener RecordListener = new RecordListener();


setTitle("Create Record");
setSize(width,height);
Container record = getContentPane();
record.setLayout(new BorderLayout());

tf_speciesName = new JTextField(10);
JLabel jl_speciesName = new JLabel("Species Name");

tf_population = new JTextField(10);
JLabel jl_population = new JLabel("Population");

tf_growthRate = new JTextField(10);
JLabel jl_growthRate = new JLabel("Growth Rate");

JButton saveRecord = new JButton("Save Record");
saveRecord.addActionListener(RecordListener);

JButton createAnotherRecord = new JButton("Create Another Record");
createAnotherRecord.addActionListener(RecordListen er);

JButton exit = new JButton("exit");
exit.addActionListener(RecordListener);

controlNorth = new JPanel();
controlNorth.setLayout(new GridLayout(3,2));
controlNorth.add(jl_speciesName);
controlNorth.add(tf_speciesName);
controlNorth.add(jl_population);
controlNorth.add(tf_population);
controlNorth.add(jl_growthRate);
controlNorth.add(tf_growthRate);

North = new JPanel();
North.setLayout(new FlowLayout());
North.add(controlNorth);

South = new JPanel();
South.setLayout(new FlowLayout());
South.add(saveRecord);
South.add(createAnotherRecord);
South.add(exit);

record.add(North,BorderLayout.NORTH);
record.add(South,BorderLayout.CENTER);
}//end of constructor

class RecordListener implements ActionListener{

public void actionPerformed(ActionEvent e){

String command = e.getActionCommand();

if(e.getSource() instanceof JButton){
if("Save Record".equals(command)){
String line1 = tf_speciesName.getText();
String line2 = tf_population.getText();
String line3 = tf_growthRate.getText();
ObjectOutputStream outputStream = null;
try{
outputStream = new ObjectOutputStream(new FileOutputStream("jerus.records"));

}
catch(IOException ex){
displayErrors();
}
try{

outputStream.writeObject(line1);
outputStream.writeObject(line2);
outputStream.writeObject(line3);
}

catch(IOException exe){
displayErrors();
}
}//end of save Record.

if("Create Another Record".equals(command)){
tf_growthRate.setText("");
tf_population.setText("");
tf_speciesName.setText("");
}
if("exit".equals(command)){
System.exit(0);
}
}//end of getSource();
}//end of actionPerformed();

}//end of recordListener.


public void displayErrors(){

JFrame errors = new JFrame();
errors.setLayout(new FlowLayout());
errors.setSize(100,100);
errors.setTitle("Error");
JLabel errorMessage = new JLabel("Error Opening File!!");
errors.add(errorMessage);
errors.setVisible(true);
errors.pack();
}
}//end of class Create_Record.

ang approach ani nga program kay mo produce siya ug file which is called jerus.records. pero ang problema kay iyang i-overwrite ang previous nako nga gi-add nga record which means dli jud mo write tanan nakong gipang add nga records dadto sa jerus.records nga file!! ngano mana?? i think kanang akong gi bold maoy problema sa program!! can u help me pls....tanx....