Declaration and Access Control -Java Programming MCQ Questions and Answers

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1.
Suppose a class has public visibility. In this class we define a protected method. Which of the following statements is correct?

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2.
Choose all the lines which if inserted independently instead of "//insert code here" will allow the following code to compile: 
public class Test{   
        public static void main(String args[]){
	        add(); 
		add(1);
		add(1, 2); 
	}

	// insert code here
}

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3.
What is the result of compiling and running the following code? 
class Base{
        private Base(){
                System.out.print("Base");
        }
}
public class test extends Base{
        public test(){
                System.out.print("Derived");
        }
        public static void main(String[] args){
                new test();
        }
}

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4.
What is the result of compiling and running the following code? 
public class Tester{
	static int x = 4;
	public Tester(){
		System.out.print(this.x); // line 1
		Tester();
	}
	public static void Tester(){ // line 2
		System.out.print(this.x); // line 3
	}
	public static void main(String... args){ // line 4
		new Tester();
	}
}

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5.
What is the result of compiling and running the following code? 
public class Tester{
	static int x = 4;
	int y = 9;  	
	public Tester(){
		System.out.print(this.x); // line 1
		printVariables();
	}
	public static void printVariables(){
		System.out.print(x); // line 2
		System.out.print(y); // line 3
	}
	public static void main(String... args) { // line 4
		new Tester();
	}
}

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