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 fields for a number of samples, a description of the type of rock, and the weight of the rock in grams. 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. Create an application that instantiates an object of each type and demonstrate that the methods work appropriately. Save the files as Rock.java, IgneousRock.java,SedimentaryRock.java, MetamorphicRock.java, and DemoRocks.java."
OOPs
In today's technology-driven world, computer programming skills are in high demand. The object-oriented programming (OOP) approach is very much useful while designing and maintaining software programs. Object-oriented programming (OOP) is a basic programming paradigm that almost every developer has used at some stage in their career.
Constructor
The easiest way to think of a constructor in object-oriented programming (OOP) languages is:
"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 fields for a number of samples, a description of the type of rock, and the weight of the rock in grams. 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. Create an application that instantiates an object of each type and demonstrate that the methods work appropriately. Save the files as Rock.java, IgneousRock.java,SedimentaryRock.java, MetamorphicRock.java, and DemoRocks.java."
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