>>>[1,2] and [3,4]
[3,4]
>>>[1,2] or [3,4]
[1,2]
>>>[1,2] and []
[]

public class Parent {
  public void foo(int x) {
    this.var += x;
  }
}

public class Child extends Parent {
  public void foo(int x) {
    super.foo(x);
    this.var += 42;
  }
}

True = False
if (1 == 1):
   LaunchNuclearMissles()

bool Alive = true; 
int Deg = 0; 
while(Alive) {
    LaunchNuclearMissles(Deg); 
    Deg++; 
    if(Deg >= 360)
         Deg = 0; 
}

volatile bool Alive

if(5 == x) ...

import java.awt.*;
import javax.swing.ImageIcon;
import javax.swing.JFrame;

public class JApp extends JFrame
{
	Image Image_Background; 
	Image Image_Picture; 
	
	public JApp(){}
	
	public static void main(String[] args)
	{
		JApp theApp = new JApp();
		theApp.OnExecute();
	}
	public void OnExecute()
	{
		OnInit();
		OnRender();
	}
	public void OnRender()
	{
		super.repaint(); 
	}
	public void OnInit()
	{
		super.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		super.setSize(640,480);
		super.setLocationRelativeTo(null);
		super.setResizable(false);
		super.setTitle("test");
		super.setVisible(true);
		
		Image_Background = new ImageIcon("C:\\background.jpg").getImage();
		Image_Picture = new ImageIcon("C:\\Zelda.jpg").getImage();
		
	}
	public void paint(Graphics Graphics_Window)
	{
		Graphics_Window.drawImage(Image_Background,0,0,null);
		Graphics_Window.drawImage(Image_Picture,100,100,null);
	}
}

JLabel imageLabel = new JLabel(new ImageIcon(imageInstance));