A Programmer’s Guide to Java® SE 8 Oracle Certified Associate (OCA)

Appendix D. Solutions to Programming Exercises

1 Basics of Java Programming

1.1 The printStackElements() method of the PrintableCharStack class does not pop the elements.

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// File: CharStack.javapublic class CharStack {  // Instance variables:  protected char[] stackArray;   // The array implementing the stack.  protected int    topOfStack;   // The top of the stack.  // Static variable  private static int counter;                                      // (1)  // Constructor now increments the counter for each object created.  public CharStack(int capacity) {                                 // (2)    stackArray = new char[capacity];    topOfStack = -1;    counter++;  }  // Instance methods:  public void push(char ...