Java The Complete Reference, Seventh Edition

148 Part I: The Java Language display: outer_x = 100 display: outer_x = 100 While nested classes are not applicable to all stiua ...

Chapter 7: A Closer Look at Methods and Classes 149 The following program demonstrates the preceding concepts: // Demonstrating ...

150 Part I: The Java Language System.out.println("strOb1 != strOb3"); } } This program generates the following output: Length of ...

Chapter 7: A Closer Look at Methods and Classes 151 Try executing this program, as shown here: java CommandLine this is a test 1 ...

152 Part I: The Java Language System.out.println(); } public static void main(String args[]) { // Notice how an array must be cr ...

Chapter 7: A Closer Look at Methods and Classes 153 // Notice how vaTest() can be called with a // variable number of arguments. ...

154 Part I: The Java Language public static void main(String args[]) { vaTest("One vararg: ", 10); vaTest("Three varargs: ", 1, ...

Chapter 7: A Closer Look at Methods and Classes 155 public static void main(String args[]) { vaTest(1, 2, 3); vaTest("Testing: " ...

156 Part I: The Java Language static void vaTest(boolean ... v) { System.out.print("vaTest(boolean ...) " + "Number of args: " + ...

8 Inheritance 8 Inheritance I nheritance is one of the cornerstones of object-oriented programming because it allows the creatio ...

class SimpleInheritance { public static void main(String args[]) { A superOb = new A(); B subOb = new B(); // The superclass may ...

You can only specify one superclass for any subclass that you create. Java does not support the inheritance of multiple supercla ...

REMEMBEREMEMBER A class member that has been declared as private will remain private to its class. It is not accessible by any c ...

Chapter 8: Inheritance 161 // constructor for BoxWeight BoxWeight(double w, double h, double d, double m) { width = w; height = ...

162 Part I: The Java Language Remember, once you have created a superclass that defines the general aspects of an object, that s ...

Chapter 8: Inheritance 163 Using super In the preceding examples, classes derived fromBoxwere not implemented as efficiently or ...

that a box can be constructed. In each case,super( )is called using the appropriate arguments. Notice thatwidth,height, anddepth ...

super(w, h, d); // call superclass constructor weight = m; } // default constructor BoxWeight() { super(); weight = -1; } // con ...

166 Part I: The Java Language This program generates the following output: Volume of mybox1 is 3000.0 Weight of mybox1 is 34.3 V ...

// Create a subclass by extending class A. class B extends A { int i; // this i hides the i in A B(int a, int b) { super.i = a; ...