1 /* Demo for: Inheritance
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Undergrad.java
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This is a template for undergraduate student objects. It is a subclass
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of the Student class */
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6 public class Undergrad 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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String level;
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int sat;
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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 Undergrad(String i, String n, char g, float gpa,
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String l, int s)
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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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level = l;
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sat = s;
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}
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// This method overRIDEs retrieveInfo() in the superclass with
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// an identical method header. It first calls the version in the
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// superclass to generate part of its output. Then it adds its
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// own part of the output, which deals with the info specific to
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// this subclass.
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public void retrieveInfo()
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{
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// Since the retrieveInfo() method in the superclass gets
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// the values of superclass-defined variables, we may save
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// some typing by simply calling the superclass method to
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// obtain those variables' values (compare this with how we
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// achieve the same goal in the retrieveInfo() method in the
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// Graduate subclass).
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super.retrieveInfo();
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E:/BCIS 3680/07a-inheritance/src/Undergrad.java
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61 }
// Staring the subclass-specific output
System.out.println("^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^");
System.out.println("Info Specific to Undergrad Subclass");
// 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
String info = "Level: " + level;
info += "\nSAT Score: " + sat;
System.out.println(info);
System.out.println("^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n");
}
E:/BCIS 3680/07a-inheritance/src/Undergrad.java
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