myobject.java

java2全方面学习课本代码

public class MyObject implements Cloneable
{
	public  int data;

	public MyObject(int i)
	{
		data=i;
	}

	public boolean equals(Object obj)
	{
		if (obj != null && (obj instanceof MyObject))
			if (this.data == ((MyObject)obj).data)
				return true;

		return false;
	}

	public int hashCode()
	{
		return (new Integer(data).hashCode());
	}

	public Object clone()
	{
		try 
		{
			return super.clone();
		}
		catch (CloneNotSupportedException e)
		{
			System.out.println(e);
			return null;
		}
	}

	public String toString()
	{
		return "This is a MyObject class's object.\n" +
                        "Which with an int field 'data' with value = " + 
			data;
	}
}