make-up

What is the output of the following application?

 package registration;

 public class NameCheck 

 { 

 public static void main(String... data)

 { 

 String john = "john"; 

 String jon = new String(john); 

 System.out.print((john==jon)+" "+(john.equals(jon)));

 } 

 }

 

• A. true true 

   

• B. true false 

•  C. false true 

•  D. false false

Which statement immediately exits a switch statement, skipping all remaining case or default branches?

•  A. exit 

   

• B. break 

   

•  C. goto

   

• D. continue

How many instance initializers are in this code? 

 1: public class Bowling {

 2: { System.out.println(); } 

 3: public Bowling () { 

 4: System.out.println(); 

 5: }

 6: static { System.out.println(); }

 7: { System.out.println(); } 

 8: }

•  A. None

•  B. One 

•  C. Two 

•  D. Three

What is the output of the following?
var teams = new String("694");
teams.concat(" 1155") ;
teams.concat(" 2265") ;
teams. concat(" 2869");
System. out. println (teams) ;

• A. 694

• 
  B. 694 1155 2265 2869
  

• C. The code compiles but outputs something else.

• 
  D. The code does not compile.

What is the output of the following code snippet?
int count = 0;
var stops = new String[] { "Washington", "Monroe", "Jackson", "LaSalle" };
while (count ‹ stops. length)
if (stops[++count]. length () < 8)
break;
else continue;
System. out. println (count) ;

• A. 0
  

• B. 1

• 
  C. 2
  

• D. 3

What will be the output of the following Java program?

class Output 

{

        public static void main(String args[]) 

        {    

             int a,b,c,d;

             a=b=c=d=20;

            a+=b-=c*=d/=20;

           System.out.println(a+" "+b+" "+c+" "+d);

 

        } 

}

• a) compile time error

• b) runtime error

• c) a=20 b=0 c=20 d=1

• d) none of the mentioned

What is the minimum number of lines that need to be removed to make this code compile?
@FunctionalInterface
public interface Play {
public static void baseball () {}
private static void soccer () {}
default void play() {}
void fun ();
}

• 
  A. One
  

• B. Two
  

• C. Three

• E. The code compiles as is.

What will be the output of the following Java program?

    class bitwise_operator 

    {

        public static void main(String args[])

        {

            int var1 = 42;

            int var2 = ~var1;

            System.out.print(var1 + " " + var2);     

        } 

    }

• a) 42 42

• b) 43 43

• c) 42 -43

• d) 42 43

What is it called if an object has its own lifecycle and there is no owner?

• a) Aggregation

• b) Composition

• c) Encapsulation

• d) Association

Given the following code snippet, what is the value of dinner after it is executed?
int time = 9;
int day = 3;
var dinner = ++time >= 10 ? day-- <= 2 ? "Takeout" : "Salad" : "Leftovers";

• A. Takeout
  

• B. Leftovers
  

• C. Salad

• 
  D. The code does not compile but would compile if parentheses were added.