In Java, the declaration of the following code results in __________.public static void main(String[] args) { … Car car; …}1 pointA Car object with unknown stateA Car reference with an undefined valueA Car reference with a null value

Analyze the following code carefully. public class Test {   int x;   public Test(String t) {      System.out.println("Test");   }   public static void main(String[] args) {     Test test = null;     System.out.println(test.x);   } } Group of answer choicesThe program has a compile error because test is not initialized.The program has a compile error because x has not been initialized.The program has a compile error because you cannot create an object from the class that defines the object.The program has a compile error because Test does not have a default constructor.The program has a runtime NullPointerException because test is null while executing test.x.

In Java, which of the following statements about reference types are correct:They contain the value of the object that they refer to.A reference can be assigned to another object of the same type.A reference can be assigned to a new object by using the new keyword.They throw a compiler error if you attempt to assign them null.1, 2, and 31, 2, and 42 and 32, 3, and 4

Select the correct answerWhat is the output of the following Java program?public class Vehicle { public void move() { System.out.println("The vehicle moves"); }}public class Car extends Vehicle { public void move() { System.out.println("The car moves"); }}public class Main { public static void main(String[] args) { Vehicle vehicle = new Car(); vehicle.move(); }}Options"The vehicle moves"The code does not compileNone of these"The car moves"

What is the result of the following code? 1: public abstract class Bird { 2: private void fly() { System.out.println("Bird is flying"); } 3: public static void main(String[] args) { 4: Bird bird = new Pelican(); 5: bird.fly(); 6: } 7: } 8: class Pelican extends Bird { 9: protected void fly() { System.out.println("Pelican is flying"); } 10: }  *1 pointA. Bird is flyingB. Pelican is flyingC. The code will not compile because of line 4.D. The code will not compile because of line 5.E. The code will not compile because of line 9.

Which of the following is not a valid Java variable name?*1 pointmy_variableMyVariablemyVariable1variable