Analyze the following code and indicate, for each line, whether autoboxing, unboxing, or neither occurs when the assignment operator is evaluated: Integer a = 15; // 1 occurs int b = a; // 2 occurs 1 : [1] 2 : [2]
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You have files Parent.java, Child.java, and a driver class n…
You have files Parent.java, Child.java, and a driver class named Driver.java. Fill in the correct visibility modifiers so that the comments in the class Child and Driver’s main method are upheld. public class Parent { 1 void method1() { /*compiles*/ } 2 void method2() { /*compiles*/ } 3 void method3() { /*compiles*/ } } —– in a separate file in a different package/directory —– public class Child extends Parent { public void foo() { method1(); // doesn’t compile method2(); // compiles }} —– in a separate file in a different package/directory —– public class Driver { public static void main(String[] args) { Child c = new Child(); c.method1(); // doesn’t compile c.method2(); // doesn’t compile c.method3(); // compiles }} 1 : [1] 2 : [2] 3 : [3]
Fill in the blanks to implement the toString method. public…
Fill in the blanks to implement the toString method. public class Restaurant { private String name; private String cuisine; private double rating; public 1 toString( 2 ) { 3 }} 1 :[1] 2 :[2] 3 :[3]
Given the following class hierarchy, identify whether the me…
Given the following class hierarchy, identify whether the method foo is overloaded, overridden, or neither by the subclass: public class Parent { public void foo(int i, String s) { /* implemented */ }}public class Child extends Parent { public void foo(int i) { /* implemented */ }}
Fill in the blanks to implement the toString method. public…
Fill in the blanks to implement the toString method. public class Restaurant { private String name; private String cuisine; private double rating; public 1 toString( 2 ) { 3 }} 1 :[1] 2 :[2] 3 :[3]
Analyze the following code and indicate, for each line, whet…
Analyze the following code and indicate, for each line, whether autoboxing, unboxing, or neither occurs when the assignment operator is evaluated: Boolean b = true; // 1 occursboolean a = b; // 2 occurs 1 : [1] 2 : [2]
Analyze the following code and indicate, for each line, whet…
Analyze the following code and indicate, for each line, whether autoboxing, unboxing, or neither occurs when the assignment operator is evaluated: Double a = 20.5; // 1 occurs double b = a; // 2 occurs 1 : [1] 2 : [2]
public class Genre { public Genre() { System.out.println…
public class Genre { public Genre() { System.out.println(“GENRE”); }}public class MusicGenre extends Genre { public MusicGenre() { System.out.println(“MUSIC”); }}public class Rock extends MusicGenre { public Rock () { super(); System.out.println(“ROCK”); }} Given the class definitions above, what is printed to the console when the following lines of code are executed? Assume the code compiles and runs (i.e. ignore typos). MusicGenre g = new MusicGenre();Rock s = new Rock();
Analyze the following code and indicate, for each line, whet…
Analyze the following code and indicate, for each line, whether autoboxing, unboxing, or neither occurs when the assignment operator is evaluated: Boolean b = true; // 1 occursboolean a = b; // 2 occurs 1 : [1] 2 : [2]
Given 3 classes (Tulip, Flower, and Plant), Tulip can inher…
Given 3 classes (Tulip, Flower, and Plant), Tulip can inherit from both Flower and Plant with the following syntax: public class Tulip extends Flower, Plant { /* valid class definition */}