Complete Class

Classic programmed-learning exercises, refreshed for modern Java and presented in the current MrStyner.com portfolio style.

Modern Java noteThis archive has been refreshed for Java 25 LTS. Core language concepts remain useful, while outdated setup instructions and browser-era Java are labeled or replaced. Java 26 is the current feature release; Java 25 is used here as the stable teaching baseline.
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Answer:

  public String toString()
  {
    return  "Account: " + accountNumber + "/tName: " + accountHolder + 
            "/tBalance: " +  balance + "/tUse Count: " + useCount;
  }

Complete Class

Here is the complete class:

class CheckingAccount
{
  // data-declarations
  private String accountNumber;
  private String accountHolder;
  private int    balance;
  private int    useCount = 0;

  //constructors
  CheckingAccount( String accNumber, String holder, int start )
  {
    accountNumber = accNumber ;
    accountHolder = holder ;
    balance       = start ;
  }

  // methods
  private void incrementUse()
  {
    useCount = useCount + 1;
  }

  int getBalance()
  {
    return balance ;
  }

  void  processDeposit( int amount )
  {
    incrementUse();
    balance = balance + amount ; 
  }

  void processCheck( int amount )
  {
    int charge;

    incrementUse();
    if ( balance < 100000 )
      charge = 15; 
    else
      charge = 0;

    balance =  balance - amount - charge  ;
  }

  public String toString()
  {
    return  "Account: " + accountNumber + "/tName: " + accountHolder + 
            "/tBalance: " +  balance + "/tUse Count: " + useCount;
  }

}

QUESTION 13:

What does the useCount keep track of:

  • The number of times an individual object has been used, or
  • The number of times the entire class has been used?