Hello,
What is the answer to this Java question?
Which of the following is false with respect to local variables?
a. Their lifetime is the execution time of the method they are declared in
b. Their scope is the method they are declared in
c. They are not auto-initialised unless they are elements of an array
d. They must be primitive
e. They cannot have the same name as an instance variable in the same class
f. Select this option if you think more than one of the above false
The first statement is correct as the lifetime of local variables is always during the execution time of the method they are declared in.
The second statement is true that is their scope is the method they are declared in.
public static void Func1( int a, int b)
{
int r=a*b;
System.out.println(r);
}
public static void Func1( )
{
}
Here, the variable r has its scope and execution local to its execution method.
The third statement is also true as the local variables are used for specific purposes and it cannot have any kind of default value.
The fourth option is correct as non primitive variables are not locally defined in a function but are created by the programmer itself. So, local variables must be primitive.
The fifth option is also not correct as the name of local variable can be same as that of an instance variable in the same class.
Thus, the false statement is option e.
Hello, What is the answer to this Java question? Which of the following is false with...
Question 1 1 pts Which of the following is not a valid class name in Java? O MyClass MyClass1 My_Class MyClass# Question 2 1 pts Which of the following statements is False about instance variables and methods? Instance variables are usually defined with private access modifier. Instance variables are defined inside instance methods. Instance methods are invoked on an object of the class that contains the methods. A class can have more than one instance variables and methods. Question 3...
Hello, In need of help with this Java pa homework. Thank you! 2. Create a normal (POJo, JavaBean) class to represent, i. e. model, varieties of green beans (also known as string beans or snap beans). Following the steps shown in "Assignment: Tutorial on Creating Classes in IntelliJ", create the class in a file of its own in the same package as class Main. Name the class an appropriate name. The class must have (a) private field variables of appropriate...
1. Create a UML diagram to help design the class described in Q2 below. Do this exercise before you attempt to code the solution. Think about what instance variables will be required to describe a Person class object; should they be private or public? Determine what class methods are required; should they be private or public?2. Write Java code for a Person class. A Person has a name of type String and an age of type integer.Supply two constructors: one will be...
Besides answering, please explain why that is the answer. java Question 8. The relationship between a class and an object is best described as a) classes are instances of objects b) objects are instances of classes c) objects and classes are the same thing d) classes are programs while objects are variables e) objects are the instance data of classes Question 10. Assume that we have the class Airplane. A 3-by-4 two-dimensional array of objects of the class Airplane is...
JAVA :The following are descriptions of classes that you will create. Think of these as service providers. They provide a service to who ever want to use them. You will also write a TestClass with a main() method that fully exercises the classes that you create. To exercise a class, make some instances of the class, and call the methods of the class using these objects. Paste in the output from the test program that demonstrates your classes’ functionality. Testing...
JAVA QUESTION 16 Write and submit the java source for the following class specification: The name of the class is Question_16 Class Question_16 has 3 instance variables: name of type String, age of type int and height of type double. Class Question_16 has the following methods: print - outputs the data values stored in the instance variables with the appropriate label setName - method to set the name setAge - method to set the age setHeight - method to set...
Part Two: Fill in the Blanks and True/False (24 total points - 2 points each) For each of the following, fill in the most appropriate word(s)phrase/solution in each blank 1) Keywords, identifiers and literals are all kinds of are simply groups of characters that are used for various purposes in a program. , which 2) The Java expression: 11 - 2 + 3 evaluates to 3) List the Java boolean (logical) operators in order from highest priority to lowest priority...
Hello, What is the answer to this Java question? After the following declaration: People[] crowd = new People[10]; What is the value of crowd[0]? a) Undefined b) The address of a People object c) The address of a crowd object d) null e) Select this option if you think crowd[0] has invalid syntax
Which of the following is False about arrays in Java? A data structure for storing a collection of data of the same type. Length of array can be changed after creation of array. A Java array is an object. Array's index cannot be negative or bigger than array's length. Which of the following can print out all elements in array? int[] [] items - { {0, 1, 3, 4), {4, 3, 99, 0, 7), {3, 2} } ; for (int...
java prog The following statements are either True or false | An instance variable or method belongs to an instance of a class. Its use is associated with individual instances. A variable defined inside a method is referred to as a local variable. Exception handling separates error-handling code from normal programming tasks, thus making programs easier to read and to modify. When an exception occurs in a method, the method does not exit immediately if it does not catch the...