Test.java

public class Test {
    
    public static void main(String[] args) {
        Rectangle rectangle1=new Rectangle();
        rectangle1.width=3;
        rectangle1.height=4;
        System.out.println("Alan 1 : "+rectangle1.getArea());
        
        Rectangle rectangle2=new Rectangle(5,12);
        System.out.println("Alan 2 : "+rectangle2.getArea());
        
        Rectangle rectangle3=rectangle1;
        System.out.println("Alan 3 : "+rectangle3.getArea());
        
        rectangle1=rectangle2;
        System.out.println("Alan 1 : "+rectangle1.getArea());
        System.out.println("Alan 3 : "+rectangle3.getArea());
        
        Rectangle rectangle4=null;
        
        
        int i=3;
        long l=3L;
        short s=3;
        byte b=3;

        float f=3.2f;
        double d=3.2;
        
        int ii=(int)d;
        int il=(int)l;
        long li=i;
        double dd=i;
            
        
        System.out.println("Tamsayı : "+i);
   
        char c1='A'; 
        char c2='3';
        
        char c='2'+'2';
        System.out.println("İki kere iki "+c);
        char c3='.';
        
        System.out.println(" İki  "+ (int)'2');
        System.out.println("İki kere iki "+ (char)100);
        
        boolean bo1=true;
        boolean bo2=false;
        
        String st="Godoro "+" Yayıncılık ";
    }
    
}