Search for single elements in Java

Question

Hello,

I currently struggle to filter single elements from a JList. I have to program a telephone book for my professor and already managed to create a new telephone book as well as loading and saving contacts via JFileChooser.

I did it like this.

//Serialize Data:--------------------------------------------------------------------------------------------------------------

public void saveData() throws IOException, ClassNotFoundException{ //Umwandlung des Objekts in Sequenz von Bytes zum Speichern

int saveFile = fcS.showSaveDialog(this);
if(saveFile == JFileChooser.APPROVE_OPTION)
{
FileOutputStream fileOut = new FileOutputStream(fcS.getSelectedFile().getAbsolutePath());
ObjectOutputStream out = new ObjectOutputStream(fileOut);

out.writeObject(telefonbuch);

out.close();
out.flush();
fileOut.close();
System.out.println("Serialized data is saved in"+(fcS.getSelectedFile().getAbsolutePath()));
}}

//DeSerialize Data:--------------------------------------------------------------------------------------------------------------------

@SuppressWarnings("unchecked")
public void loadData() throws IOException, ClassNotFoundException, ClassCastException{ //zurück zu Ursprungsform zum Laden???

try {
if (fcL.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
FileInputStream fileIn = new FileInputStream(fcL.getSelectedFile().getAbsolutePath());
ObjectInputStream in = new ObjectInputStream(fileIn);
telefonbuch = (ArrayList<Kontakt>)in.readObject();

System.out.println(telefonbuch.toString());
System.out.println("deserialized data is loaded from"+ fcL.getSelectedFile().getAbsolutePath());

in.close();
fileIn.close();
}}catch (IOException i) {
i.printStackTrace();
return;
}catch (ClassNotFoundException c) {
c.printStackTrace();
return;
}
}

Furthermore I`m also able display my created contacts by means of a JSplitPane. However, my professor wants

Answer 1

https://stackoverflow.com/questions/26271760/filtering-a-jlist-from-text-field-input