当前位置：首页 -> AI编程基础 -> JAVA

java例程练习（容器类简单练习）

2014-11-24 07:51:14 · 作者: · 浏览: 0
标签: java 练习 容器 简单
import java.util.ArrayList;
import java.util.Collection;


public class Test {
public static void main(String[] args) {
Collection c = new ArrayList();

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;
}
}
[java]
//精彩继续
[java] 
import java.util.ArrayList; 
 
 import java.util.Collection; 
 
  
 
  
 
 public class Test { 
 
     public static void main(String[] args) { 
 
         Collection c = new ArrayList(); 
 
          
 
         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(); 
 
     } 
 
 } 
 
 
 
 
 
 
 
 摘自 Yours风之恋