Handling text change events in JTextField and JLabel

JLabel : PropertyChangeListener

JTextField : DocumentListener

 import javax.swing.*;  
 import javax.swing.event.DocumentEvent;  
 import javax.swing.event.DocumentListener;  
 import java.beans.PropertyChangeEvent;  
 import java.beans.PropertyChangeListener;  
   
 public class TestClass {  
   JLabel mLabel = new JLabel("TEST");  
   JTextField mTextField = new JTextField("TEST");  
   
   TestClass() {  
     mLabel.addPropertyChangeListener(new MyChangeListener());  
     mTextField.getDocument().addDocumentListener(new MyDocumentListener());  
   }  
   
   private class MyChangeListener implements PropertyChangeListener {  
     @Override  
     public void propertyChange(PropertyChangeEvent evt) {  
       if ("text".equals(evt.getPropertyName())) {  
   
       }  
     }  
   }  
   
   private class MyDocumentListener implements DocumentListener {  
     @Override  
     public void insertUpdate(DocumentEvent e) {  
   
     }  
   
     @Override  
     public void removeUpdate(DocumentEvent e) {  
   
     }  
   
     @Override  
     public void changedUpdate(DocumentEvent e) {  
   
     }  
   }  
 }  

Get result after run "adb logcat" in python

import subprocess
 
process = subprocess.Popen(['adb', 'logcat'], stdout=subprocess.PIPE)
while True:
    line = process.stdout.readline()
    line = line.decode('utf-8', errors='ignore')
    line = line.strip()
    print(line)