class X { public X(int i) { System.out.println(1); } } class Y extends X { public Y() { System.out.println(2); }
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A: HI THEREI AM ADDING ANSWER BELOWPLEASE GO THROUGH ITTHANK YOU
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A: Answer in step 2
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- class A{}; class B{}; int main() { A obl,ob2; B ob3; ob3=ob2; } (a)Why does Overloading occur? Is there any error in this code section? If there is any, explain with reason.Start with this class declaration: class Student { int sId; String name; double gpa;} Implement a Comparable and Comparator interface to provide the following three (3) alternative ways of ordering for the Student objects - based on sId (i.e., assume that this is selected as the natural ordering)- based on name, - based on gpa. Next declare a list of five Student objects, initialize them with random values. Test your code by printing out each of the following on separate lines: (original list of students, sorted list of students in ascending sId order, sorted list of students in ascending name order, sorted list of students in ascending gpa order).Start with this class declaration: class Student { int sId; String name; double gpa;} Implement a Comparable and Comparator interface to provide the following three (3) alternative ways of ordering for the Student objects - based on sId (i.e., assume that this is selected as the natural ordering)- based on name, - based on gpa. Next declare a list of five Student objects, initialize them with random values. Test your code by printing out each of the following on separate lines: (original list of students, sorted list of students in ascending sId order, sorted list of students in ascending name order, sorted list of students in ascending gpa order). Please use java and intellij IDEA
- PLZ help with the folllowig IN JAVA TRUE OR FALSE When a recursive call is encountered, computation is temporarily suspended; all of the information needed to continue the computation is saved and the recursive call is evaluated. 2.Can you have a static method in a nonstatic inner class?1) Predict the output of the following code: public class MyClass extends Test public static void main(String[] args) { MyClass x = new MyClass (); Test y = new MyClass(); System.out.println(x.num() + } + y.num()); public static int num() { return 2; } } class Test { public static int num() { return 5; } } a. Runtime error b. 22 c. 2 5 d. Compilation errori. Identify the subclass and superclass. ii. Create other class named Triangle that inherits the properties from the superclass. Calculate the area of Triangle in instance method and instantiates object for Triangle class accordingly in main class.
- Write all the code within the main method in the Test Truck class below. Implement the following functionality. a) Constructs two truck objects: one with any make and model you choose and the second object with gas tank capacity 10. b) If an exception occurs, print the stack trace. c) Prints both truck objects that were constructed. import java.lang.IllegalArgumentException ; public class TestTruck { public static void main ( String [] args ) { heres the truck class information A Truck can be described as having a make (string), model (string), gas tank capacity (double), and whether it has a manual transmission (or not). Include the following methods in your class definition. . An overloaded constructor which takes the make and model. This method throws an IllegalArgumentException if the make is "Jeep". An overloaded constructor which takes the gas tank capacity. This method throws an IllegalArgumentException if the capacity of the gas…Inheritance is a mechanismin which one class acquires the property of an other class. For example, a child inherits the traits of his/her parents. (a) Understand the program code below in Figure 1 and answer the following questions. class shape { protected int length, width; void set (int a, int b) { length width = b; } void show () = a; { System.out.println (length+" "+width); }} class rectangle extends shape { int area; void setArea () { area= length*width;} void show () { System.out.println (area); }} class AreaRec{ public static void main (String [] args) { rectangle r= new rectangle () ; r. Set (4,10); r. Show () ; r. SetArea () ; r. Show () ; }} Figure 1: Rectangle area i. Identify the output of the program above. Please show the tracing table.3. Consider the following two classes and write down the output of the following code: public class Test extends G{ void display() { String s = m1(); System.out.println("My name is "+ s); i - 7; j = j + i; } void show(){ System.out.println(" j value is - } public static void main(String args[]) { Test t - new Test(); System.out.println("s value is = t.display(); t.i = 9; System.out.println("i value in the object="+t.i); System.out.println("j value in the object="+t.j); t.show(); } abstract class G{ String s - "Exam"; int i = 10; int j - 5; String m1(){ s = "Java"; return s; abstract void display(); abstract void show( ); } " + j); + t.s);
- use java (ArrayList, inheritance, polymorphism, File I/O and basic Java) Student class: First, you need to design, code in Java, test and document a base class, Student. The Student class will have the following information, and all of these should be defined as Private: A first name (given name) A last name (family name/surname) Student number (ID) – an integer number (of type long) The Student class will have at least the following constructors and methods: (i) two constructors - one without any parameters (the default constructor), and one with parameters to give initial values to all the instance variables of Student. (ii) only necessary set and get methods for a valid class design. (iii) a reportGrade method, which you have nothing to report here, you can just print to the screen a message “There is no grade here.”. This method will be overridden in the respective child classes. (iv) an equals method which compares two student objects and returns true if they…1(c). What is the problem with the code below? Write two different ways to fix the problem. (5) interface A { interface B { default void f () { System.out.println("A's f"); } default void f () { System.out.printIn("B's f"); } } } public class C implements A, B {Subject : object Orieted Programming Q: Find the error in the following given codes and rewrite. a). public interface intt { public void P1 (String p) { System.out.println ("figure is " + p ); } public double p2 ( ) ; } b). class B { final void r() { System.out.println("run");} } class H implements B { void r() { System.out.println("run run"); } public static void main(String args[]) { H h= new H(); h.r(); } }