1 /* Demo for: Inheritance
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Graduate.java
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This is a template for graduate student objects. It is a subclass
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of the Student class */
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6 public class Graduate extends Student
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// Instance variables specific to this subclass
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// For ease of reading, getters and setters for these variables
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// are omitted.
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boolean doctoral;
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int gmat;
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// This is the non-default contructor
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// It first calls the constructor in the superclass (Student)
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// to initialize those variables that are defined in the
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// superclass. It then initializes those variables that are
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// defined in this subclass.
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// Note that the parameter list includes all pieces of
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// information, for both those superclass-defined variables
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// and subclass-defined variables.
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public Graduate (String i, String n, char g, float gpa,
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boolean d, int gmat)
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{
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// Call the superclass constructor by passing input it needs
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super(i, n, g, gpa);
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// Initializes variables defined in this subclass
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doctoral = d;
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this.gmat = gmat;
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}
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// Override the superclass version. Unlike its counterpart in the
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// Undergrad class, this version doesn't call the superclass version
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// to generate part of its output. Everything is done from scratch.
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public void retrieveInfo()
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{
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// Notice that the superclass-defined variables are
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// accessible here by calling their getter methods
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String infoStr = "\nUNT ID: " + this.getUNTID();
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infoStr += "\nName: " + this.getName();
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infoStr += "\nGender: " + this.getGender();
E:/BCIS 3680/07a-inheritance/src/Graduate.java
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64 }
infoStr += "\nGPA: " + this.getGPA();
//
//
//
if
{
Now, retrieve values of those variables defined in this class
They are directly accessible (no need to call getter methods
because they were defined earlier in this class
( doctoral )
infoStr += "\nDoctoral Student";
}
else
{
infoStr += "\nMaster's Student";
}
infoStr += "\nGMAT Score: " + gmat;
System.out.println("***********************************");
System.out.println("Running Version in Graduate Subclass");
System.out.println("Very different from Student Version");
System.out.println(infoStr);
System.out.println("************************************\n");
}
E:/BCIS 3680/07a-inheritance/src/Graduate.java