java例程练习（容器类简单练习）

import java.util.ArrayList;
import java.util.Collection;


public class Test {
	public static void main(String[] args) {
		Collection<Object> c = new ArrayList<Object>();
		
		c.add("hello");
		c.add(new Name("f1", "l1"));
		c.add(new Integer(100));
		
		System.out.println(c.size());
		System.out.println(c);
	} 
}

class Name {
	private String firstName;
	private String lastName;
	Name(String firstName, String lastName) {
		this.setFirstName(firstName);
		this.setLastName(lastName);
	}
	public void setFirstName(String firstName) {
		this.firstName = firstName;
	}
	public String getFirstName() {
		return firstName;
	}
	public void setLastName(String lastName) {
		this.lastName = lastName;
	}
	public String getLastName() {
		return lastName;
	}
	public String toString() {
		return firstName + " " + lastName;
	}
}

//精彩继续

import java.util.ArrayList;
import java.util.Collection;


public class Test {
	public static void main(String[] args) {
		Collection<Object> c = new ArrayList<Object>();
		
		c.add("hello");
		c.add(new Name("f1", "l1"));
		c.add(new Integer(100));
		
		System.out.println(c.size());
		System.out.println(c);
		System.out.println();
		
		c.remove("hello");
		c.remove(new Integer(100));
		
		System.out.println(c.remove(new Name("f1", "l1")));
		System.out.println(c);
	} 
}

class Name {
	private String firstName;
	private String lastName;
	
	Name(String firstName, String lastName) {
		this.setFirstName(firstName);
		this.setLastName(lastName);
	}
	
	public void setFirstName(String firstName) {
		this.firstName = firstName;
	}
	
	public String getFirstName() {
		return firstName;
	}
	
	public void setLastName(String lastName) {
		this.lastName = lastName;
	}
	
	public String getLastName() {
		return lastName;
	}
	
	public String toString() {
		return firstName + " " + lastName;
	}
	
	public boolean equals(Object obj) {
		if(obj instanceof Name) {
			Name name = (Name) obj;
			return (firstName.equals(name.firstName)) && 
				   (lastName.equals(name.lastName));
		}
		return super.equals(obj);
	}
	
	public int hashCode() {
		return firstName.hashCode();
	}
}