class ClassName { // static variable public static String variableName; // static method public static String methodName () { // implementation not shown Which of the following code segments should be used to call the static method "methodName" in another class? ClassName.staticMethod(); ClassName.methodName(); methodName(); staticMethod();

class ClassName { // static variable public static String variableName; // static method public static String methodName () { // implementation not shown Which of the following code segments should be used to call the static method "methodName" in another class? ClassName.staticMethod(); ClassName.methodName(); methodName(); staticMethod();

EBK JAVA PROGRAMMING

9th Edition

ISBN:9781337671385

Author:FARRELL

Publisher:FARRELL

Chapter10: Introduction To Inheritance

Section: Chapter Questions

Problem 6RQ

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Java code Write the header for a public method named doStuff that has no parameters and no return value. Remember to include the opening brace for the method. Assume that the method will be in the main class and called directly by the main method.
Indicate whether the statement is true or false. 13. The non-static methods of a class are called instance method. 14. A constructor has no type and is therefore a void method. 15. A class can have only two constructors. 16. In shallow copying, each reference variable refers to its own object. 21. The method finalize automatically executes when the class objects goes out of scope. 22. A mutator method of a class changes the values of data members of the class. 23. In java, the reference this is used to refer to only the methods, not the instance variables of a class. 24. Classes that are defined within other classes are called inside classes. 25. Modifiers are used to alter the behavior of the class 26. A constructor has the same name as the class. 27. Constructors are called like any other method. 28. You can perform some arithmetic operations on class objects.
a- Write a java class named Account which contains: private data field named number of type int private data field named balance of type double no argument constructor An argument constructor to create Account object with specified number and balance. A method toString() that returns number and balance as a String Set and Get Methods for all the data fields b- Write java code for the test class named testAccount which contains: Main method Create this object of type account à number:30214 balance:950.23 Change the balance by using set method to 900.0 Print the object by using toString method.
Assuming that there exists a method named MakeSound in a base class, which derived method could successfully override it? Question 8 options: public extends void MakeSound() { } public override void MakeSound() { } public virtual void MakeSound() { } public base void MakeSound() { }
Static methods within a class are copied into each object created from the class. true or false java
True or False If a method belongs to a class, then you must write a method’s definition inside the class.
Explain........... A method defined within a class and whose header does NOT include the static modifier is known as which of the following? a class method b instance method c super method d private method e public method
This is the question - Create a class named Rock that acts as a superclass for rock samples collected and catalogued by a natural history museum. The Rock class contains the following fields: sampleNumber - of type int description - A description of the type of rock (of type String) weight - The weight of the rock in grams (of type double) Include a constructor that accepts parameters for the sample number and weight. The Rock constructor sets the description value to "Unclassified". Include get methods for each field. Create three child classes named IgneousRock, SedimentaryRock, and MetamorphicRock. The constructors for these classes require parameters for the sample number and weight. Search the Internet for a brief description of each rock type and assign it to the description field using a method named setDescription inside of the constructor. This is the code I have, the program does not like at all what I have - import java.util.*; public class DemoRock { public static…
This is the question - Create a class named Rock that acts as a superclass for rock samples collected and catalogued by a natural history museum. The Rock class contains the following fields: sampleNumber - of type int description - A description of the type of rock (of type String) weight - The weight of the rock in grams (of type double) Include a constructor that accepts parameters for the sample number and weight. The Rock constructor sets the description value to "Unclassified". Include get methods for each field. Create three child classes named IgneousRock, SedimentaryRock, and MetamorphicRock. The constructors for these classes require parameters for the sample number and weight. Search the Internet for a brief description of each rock type and assign it to the description field using a method named setDescription inside of the constructor. I am only missing two checks and they seem to be with the rock, here is my code then I will copy one check - import java.util.*;…
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