Consider the following Java statements.              Scanner input = new Scanner(System.in);              float radius = input.nextFloat();              double area; Which of the variables in this piece of code are reference variables?

Which of the following can be used to declare a floating-point variable in Java?floatdoubleBoth float and doubleNeither float nor doub

Which of the following methods is not present in the Scanner class in java?Options: Pick one correct answer from belownextLine();next();nextString();nextFloat();

The variables declared in a class for the use of all methods of the class are called reference variablesobjectsinstance variablesNone of these

Analyze the following code:  public class Test {   public static void main(String[] args) {     double radius;     final double PI = 3.15169;     double area = radius * radius * PI;     System.out.println("Area is " + area);   } } Group of answer choicesThe program has compile errors because the variable radius is not initialized.The program has a compile error because a constant PI is defined inside a method.The program has no compile errors but will get a runtime error because the radius is not initialized.The program compiles and runs fine.

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