Cuestionario 23. 1Z0-808

Given:

public class TestLoop {
    public static void main(String[] args) {
        float myarray[] = {10.20f, 20.30f, 30.40f, 50.60f};
        int index = 0;
        boolean isFound = false;
        float key = 30.40f;
        // insert code here
        System.out.println(isFound);
    }
}

Which code fragment, when inserted at line 7, enables the code print true?

Given:

class Base {
 
    public static void main(String[] args) {
        System.out.println("Base " + args[2]);
    }
}
 
public class Sub extends Base {
 
    public static void main(String[] args) {
        System.out.println("Overriden " + args[1]);
    }
}

And the commands:

javac Sub.java
java Sub 10 20 30

What is the result?

class SpecialException extends Exception {
 
    public SpecialException(String message) {
        super(message);
        System.out.println(message);
    }
}
 
public class ExceptionTest {
    public static void main(String[] args) {
        try {
            doSomething();
        } catch (SpecialException e) {
            System.out.println(e);
        }
    }
    static void doSomething() throws SpecialException {
        int[] ages = new int[4];
        ages[4] = 17;
        doSomethingElse();
    }
    static void doSomethingElse() throws SpecialException {
        throw new SpecialException("Thrown at end of doSomething() method");
    }
}

What will be the output?

Given the code fragment:

interface Contract {
}
 
class Super implements Contract {
}
 
class Sub extends Super {
}
 
public class Ref {
 
    public static void main(String[] args) {
        List objs = new ArrayList();
        Contract c1 = new Super();
        Contract c2 = new Sub(); // line n1
        Super s1 = new Sub();
 
        objs.add(c1);
        objs.add(c2);
        objs.add(s1); // line n2
 
        for (Object itm : objs) {
            System.out.println(itm.getClass().getName());
        }
    }
}

What is the result?

Given:

public class Test {
 
    public static void main(String[] args) {
        Test ts = new Test();
        System.out.print(isAvailable + " ");
        isAvailable = ts.doStuff();
        System.out.println(isAvailable);
    }
 
    public static boolean doStuff() {
        return !isAvailable;
    }
    static boolean isAvailable = false;
}

What is the result?

public class Msg {
 
    public static String doMsg(char x) {
        return "Good Day!";
    }
 
    public static String doMsg(int y) {
        return "Good Luck!";
    }
 
    public static void main(String[] args) {
        char x = 8;
        int z = '8';
        System.out.println(doMsg(x));
        System.out.print(doMsg(z));
    }
}

What is the result?