True or False A class can implement more than one interface.
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True or False
A class can implement more than one interface.
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- T/F1. Interface classes cannot be extended but classes that implement interfaces can be extended.T/F 1. Interface classes cannot be extended but classes that implement interfaces can be extended.An enumeration can contain public constant variables O True O False An interface can extend as many interfaces as the programmer wants O True O False An abstract class must contain at least 1 abstract method O True False
- True or False An interface can contain only abstract methods and constants.3. The interface Range is defined below:public interface Range{ void setLimits(int x, int y); int getNumber();} Implementations of Range should exhibit the following behaviour:• The setLimits method should store its parameter values somewhere to serve as the lower and upper limits of the range appropriately.• A call to getValue should return an integer that is always greater than or equal to the lower limit and less than or equal to the upper limit.The class RandomInteger is an implementation of the interface Range. It also has the following features:• It has two fields of int type, low and high, to record the lower and upper limits of the range, respectively.• It has single constructor method that takes two integers and stores them in the appropriate fields. Note: You should make use of the setLimits method.• A call to the method getNumber should return a random number that is always within the range, i.e. greater than or equal to the lower limit and less than or equal to the upper…True or False An interface can be used to define a set of methods that a class must implement.
- Code: import java.util.*; //Bicycle interface interface Bicycle { abstract void changeCadence(int newValue); //will change value of candence to new value abstract void changeGear (int newValue); //changes gear of car abstract void speedUp(int increment); //increments speed of car by adding new Value to existing speed abstract void applyBrakes(int decrement); } //ACMEBicycle class definition class ACMEBicycle implements Bicycle { int cadence = 0; Â Â int speed = 0; Â Â int gear = 1; //methods of interface public void changeCadence(int newValue) { this.cadence=newValue; } public void changeGear (int newValue) { this.gear=newValue; } public void speedUp(int increment) { this.speed+=increment; } public void applyBrakes(int decrement) { this.speed-=decrement; } //display method void display() { System.out.println("Cadence: "+this.cadence); System.out.println("Gear: "+this.gear); System.out.println("Speed: "+this.speed); } } //KEYOBicycle class definition class KEYOBicycle implements…The interface Range is defined below:public interface Range{ void setLimits(int x, int y); int getNumber();}Implementations of Range should exhibit the following behaviour:• The setLimits method should store its parameter values somewhere to serve as the lower and upper limits of the range appropriately.• A call to getValue should return an integer that is always greater than or equal to the lower limit and less than or equal to the upper limit.The class RandomInteger is an implementation of the interface Range. It also has the following features:• It has two fields of int type, low and high, to record the lower and upper limits of the range, respectively.• It has single constructor method that takes two integers and stores them in the appropriate fields. Note: You should make use of the setLimits method.• A call to the method getNumber should return a random number that is always within the range, i.e. greater than or equal to the lower limit and less than or equal to the upper limit.…You cannot instantiate an interface but you can do so to an abstract class. True False
- Define an interface as follows: Interface Bicycle { // wheel revolutions per minute void changeCadence(int newValue); //will change value of candence to new value void changeGear (int newValue); changes gear of car void speedUp(int increment); //increments speed of car by adding new Value to existing speed void applyBrakes(int decrement); }//decease car speed by subtracting value from speed. To implement this interface, the name of your class would change (to a particular brand of bicycle, for example, such as ACMEBicycle, KEYOBicycle), and you'd use the implements keyword in the class declaration: class ACMEBicycle implements Bicycle{ int cadence = 0; int speed = 0; int gear = 1; //methods of interface } These clases will implements the abstract method of interface and provide definitions according to them. Now in main class you will ask user what kind of bicycle he/she wants create object of that class, then asks user for options 1. Change cadence 2. Change gear 3. Speed…Overloading is achieved when two or more methods in the same class have the sameNoteADT - Show the interface and all abstract methods NoteDataStructureClass - Show the following methods: default constructor, overloaded constructor, copy constructor, setValue (calls other methods: setStrValue, setKeyColor, setFrequency), setLength (calls setStrLength), setFrequency (should be double value- cast)setKeyColor, getValue, getLength, getKeyColor, getFrequency, toString. NoteClientDemoClass –Instantiate two Note objects using the overloaded constructor and two Note objects using the default constructor. A sample output for 1 Note object might appear like: F# Length: Eighth note Value: -3 Black key (sharp) 369.995672 Hz