Gantry 5
Java Operator Part 1

What is the output of the following code ?

import java.io.Serializable;
public class MyClass{
    public static void main(String ads[]){
        if("s" instanceof Serializable){
            System.out.println("Yes a string is instance of Serializable");
        }else{
            System.out.println("No it is not");
        }
    }
}

What is the output of the following code

public class MyClass{
	public static void main(String ads[]){
		if(1  instanceof int){
			System.out.println("Yes 1 is an instance of int");
		}else{
			System.out.println("No it is not");
		}
	}
}
What will be the output if the line number 5, produces the exception 
public class MyClass {
	public static void main(String ads[]){
			File f = new File("aome");
			try{
			FileInputStream fis = new FileInputStream(f);
			}catch(IOException ioe){
							if(ioe instanceof FileNotFoundException){
					System.out.println("ioe is instance of FileNotFoundException");
				}else{
					System.out.println("No it is not");
				}
			}
		}
	}

What will be the output of the program ?

public class MyClass{
	public static void main(String ads[]){
		if(2.4d  instanceof Double){
			System.out.println("Yes a double literal is of type Double");
		}else{
			System.out.println("No it is not");
		}
	}
}

What is the output of the following program ?

class Animal {}
class Dog extends Animal {}
class Cat extends Animal {}

public class MyClass {
	public static void main(String ads[]){
		Animal a = new Dog();
		if(a instanceof Dog){
			System.out.println(true);
		}else
			System.out.println(false);
		if(a instanceof Animal){
			System.out.println(true);
		}else
			System.out.println(false);
		if(a instanceof Object)
			System.out.println(true);
		else
			System.out.println(false);
		
	}
}

What will be the output of the following program ?

class Animal {}
class Dog extends Animal  {}
class Cat extends Animal {}

public class MyClass {
	public static void main(String ads[]){
		Animal a = new Dog();
		Dog d= (Dog)a;
		boolean b =d instanceof Dog ? true:false;
		System.out.println("testing if do is doodle "+b);
	}
}