คอนสตรัคเตอร์

MyFile file = new MyFile();
file.initialize("c:\data\a.txt");
String text = file.readText();

MyFile file = new MyFile("c:\data\a.txt");
String text = file.readText();

MyFile file = new MyFile();
file.initialize("c:\data\", "a.txt");
String text = file.readText();

MyFile file = new MyFile("c:\data\", "a.txt");
String text = file.readText();

MyFile file = new MyFile();
file.initialize("c:\data\a.txt");

MyFile file2 = new MyFile();
file2.initialize( MyFile file, "a.txt");
String text = file2.readText();

MyFile file = new MyFile("c:\data\a.txt");


MyFile file2 = new MyFile(file, "a.txt");
String text = file2.readText();

class MyFile
{
  private String filename = null;

  public void initialize(String name)
  {
    this.filename = name;
  }

  public void initialize(String folder, String name)
  {
    this.filename = folder + name;
  }

  public void initialize(MyFile file, String name)
  {
    this.filename = file.getFolder() + name;
  }

…
}

class MyFile
{
  private String filename = null;

  public MyFile(String name)
  {
    this.filename = name;
  }

  public MyFile(String folder, String name)
  {
    this.filename = folder + name;
  }

  public MyFile(MyFile file, String name)
  {
    this.filename = file.getFolder() + name;
  }

…
}