2 .Java Programming: 42% total and 07% each) What is the output of each of the following programs

2. (Java Programming: 42% total and 07% each) What is the output of each of the following programs? The answer is ERROR if the program contains syntactic Gavac) errors or semantic Gava) errors public class o public static void main(string 1 anys) myStaticMethod : 01 mb) = new 012); myObj.my PublicMethod ); 3 static void myStatic Method System.out.print “Statle): public void my publicMethod) System.out.print Public) 1 > // Output: 11 public class 02 public static void maini Stringargs) Increment demol – new Increment Increment demo2 = new Calculation (): System.out.printi demol.incl 3 ) ); System.out.printi demo2.Inc2 1 4)); class Increment public int incl( int x) return( x + 1) 7 class Calculation extends Increment public int incat int x) return { super.incl/ *+1 ) : 2 // Output:

The correct answer and explanation is:

Let’s break down both programs you provided and analyze them carefully to determine their output and possible errors.

First Program (Java):

public class Main {
    public static void main(String[] args) {
        myStaticMethod(); // Calling static method
        MyClass myObj = new MyClass();
        myObj.myPublicMethod(); // Calling non-static method
    }

    static void myStaticMethod() {
        System.out.print("Static");
    }

    public void myPublicMethod() {
        System.out.print("Public");
    }
}

Analysis:

• Static Method: The method myStaticMethod is called inside the main method. Since it is static, it can be accessed directly using the method name myStaticMethod().
• Non-static Method: myPublicMethod is a non-static method, and it is called through an instance of the MyClass class (myObj), which is created using MyClass myObj = new MyClass();.

Output: The program should print StaticPublic because:

• myStaticMethod() prints "Static".
• myPublicMethod() prints "Public".

Thus, the output for this program is:

StaticPublic

Second Program (Java):

public class Main {
    public static void main(String[] args) {
        Increment demo1 = new Increment();
        Increment demo2 = new Calculation();
        System.out.print(demo1.incl(3));  // Output from demo1
        System.out.print(demo2.incl(4));  // Output from demo2
    }
}

class Increment {
    public int incl(int x) {
        return x + 1;
    }
}

class Calculation extends Increment {
    public int incl(int x) {
        return super.incl(x) + 1;  // Calling the base class's incl method
    }
}

Analysis:

• Class Increment: It has a method incl(int x) which simply returns x + 1.
• Class Calculation: It extends Increment and overrides the incl(int x) method. This method calls super.incl(x) to invoke the incl method from the parent class (Increment), and then adds 1 to the result.

Execution Flow:

• When demo1.incl(3) is called, it uses the incl method from the Increment class, so the result is 3 + 1 = 4.
• When demo2.incl(4) is called, it uses the overridden incl method from the Calculation class. First, it calls super.incl(4) (which calls incl from Increment, returning 4 + 1 = 5), and then adds 1 to the result, giving 5 + 1 = 6.

Output: The program will print 46 because:

• demo1.incl(3) prints 4.
• demo2.incl(4) prints 6.

Thus, the output for this program is:

46

Summary of Output:

• First Program: StaticPublic
• Second Program: 46

Both of the programs are syntactically correct and free of semantic errors. The first program demonstrates the use of static and non-static methods, while the second program demonstrates method overriding and calling methods from the superclass.