Cuestionario 8. 1Z0-808

public class Triangle {
 
    static double area;
    int b = 2, h = 3;
 
    public static void main(String[] args) {
        double p, b, h; // line n1
        if (area == 0) {
            b = 3;
            h = 4;
            p = 0.5;
        }
        area = p * b * h; // line n2
        System.out.println("Area is " + area);
    }
}

What is the result?

Given the code fragment:

public class Test {
 
    public static void main(String[] args) {
        // line n1
        switch (x) {
            case 1:
                System.out.println("One");
                break;
            case 2:
                System.out.println("Two");
                break;
        }
    }
}

Which three code fragments can be independently inserted at line nl to enable the code to print one?

public class App {
 
    public static void main(String[] args) {
        Boolean[] bool = new Boolean[2];
 
        bool[0] = new Boolean(Boolean.parseBoolean("true"));
        bool[1] = new Boolean(null);
 
        System.out.println(bool[0] + " " + bool[1]);
    }
}

What is the result?

Given the following code for the classes MyException and Test:

MyException.java
public class MyException extends RuntimeException{
    
}

================================================================

Test.java
public class Test {
 
    public static void main(String[] args) {
        try {
            method1();
        } catch (MyException ne) {
            System.out.print("A");
        }
    }
 
    public static void method1() { // line n1
        try {
            throw Math.random() > 0.5 ? new MyException() : new RuntimeException();
        } catch (RuntimeException re) {
            System.out.print("B");
        }
    }
}

What is the result?

Given:

public class App {
    
    String myStr = "7007";
    
    public void doStuff(String str) {
        int myNum = 0;
        try {
            String myStr = str;
            myNum = Integer.parseInt(myStr);
        } catch (NumberFormatException ne) {
            System.err.println("Error");
        }
        System.out.println("myStr: " + myStr + ", myNum: " + myNum);
    }
    
    public static void main(String[] args) {
        App obj = new App();
        obj.doStuff("9009");
    }
}

What is the result?

Which two are benefits of polymorphism?

Given the code fragment:

int nums1[]  = new int[3];
int nums2[]  = {1,2,3,4,5};
nums1 = nums2;
for(int x : nums1){
    System.out.print(x + ":");
}

What is the result?

Given:

public class Product {
    int id;
    String name;
    public Product(int id, String name) {
        this.id = id;
        this.name = name;
    }
}

And given the code fragment:

public static void main(String[] args) {
    Product p1 = new Product(101, "Pen");
    Product p2 = new Product(101, "Pen");
    Product p3 = p1;
    boolean ans1 = p1 == p2;
    boolean ans2 = p1.name.equals(p2.name);
    System.out.print(ans1 + ":" + ans2);
}

What is the result?