jackycui

@jackycui (32)

China • Age 42

Joined myLot 13 years ago

Learn Java easily

All Activity

jackycui's Activity

What is Java's Set Interface?

jeanjiang @jeanjiang (30) • China 10 May 11

What are implemented Classes of Set Interface? What about addming elements, removing elements and other usage of it?

set interface

2 responses

jackycui Below article can help you to understand Set Interface.

10 May 11

What is Java's List Interface?

jeanjiang @jeanjiang (30) • China 10 May 11

What are implemented Classes of List Interface? What about adding elements, removing elements and other usage of it?

list interface

1 response

jackycui Below article is about how to use List Interface.

10 May 11

How to use Java's Collection Interface?

jeanjiang @jeanjiang (30) • China 8 May 11

Java's Collection Interface is the super type of Interface - List and Set. So, How to use this Interface?

collection interface

1 response

jackycui Below article is about how to use Collection Interface.

8 May 11

How to use Java's Iterable Interface?

jeanjiang @jeanjiang (30) • China 8 May 11

Using Java's Iterable Interface can traverse a Collection. Are there some examples to illustrate it?

iterable interface

1 response •

1 person

jackycui Below example can help you understand Iterable Interface well.

8 May 11

how to decrypt sha1 encryption?

lovedude @lovedude (4447) • India 5 May 11

Anyone has idea how to decrypt password field with sha1 encryption using java or any other language?

1 response

jackycui I think below link can give you some help.

7 May 11

jeanjiang @jeanjiang (30) • China 5 May 11

Java Collection consists of List, Set and Map. So, what are the similarities and the differenece between List, Set and Map.

collection

1 response

jackycui Below article can answer your question.

7 May 11

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1 comment

What is the architecture fo Java Collection?

jeanjiang @jeanjiang (30) • China 5 May 11

Java Collection is very useful in Java Language. I want to learn it. Is there any body can tell me what is the architecture of Java Collection.

collection

1 response

jackycui The core of Java Collection contains List, Set and Map. Below is the article:

6 May 11

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1 comment

How to implement a constrained property or implement a bound property?

jeanjiang @jeanjiang (30) • China 4 May 11

Java Bean has constrained property and bound property. How to implement a constrained property or implement a bound propery?

bean

1 response

jackycui Implement a constrained propery is as below: http://www.javaol.net/2011/04/implementing-a-constrained-property/ Implement a bound property is as below:

6 May 11

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1 comment

What is the standard way to get or set a property of a bean?

jeanjiang @jeanjiang (30) • China 5 May 11

Package - java.beans can use Class - Expression and Statement to get and set a property of a bean. It is the standard way. Does any one can give me some examples about it.

bean

1 response

jackycui Below is a example about it, you can understand it easily.

5 May 11

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1 comment

What are the detail meanings of Java Bean properties?

jeanjiang @jeanjiang (30) • China 4 May 11

Java Bean has four properties, simple properties, bound properties, constrained properties, indexed properties. But What are the detail meanings of Java Bean properties?

bean

1 response

jackycui Below is about this:

4 May 11

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1 comment

What is the standard way to instantiate a Java Bean?

jeanjiang @jeanjiang (30) • China 30 Apr 11

We can treat a Java Bean as a common Java object, and instantiate it by Java key word - new. But Java Bean is different from common Java object. So what is the standard way to instantiate a Java Bean?

java bean

1 response

jackycui Below is a example:

30 Apr 11

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1 comment

What is Java Introspecter, and where can we use it?

jeanjiang @jeanjiang (30) • China 30 Apr 11

Introspecter is a feature of Java Bean. I just heard about it. So, what is Java Introspecter and where can we use it?

java introspector

1 response

jackycui The Introspector class provides a standard way for tools to learn about the properties, events, and methods supported by a target Java Bean. Below is a example:

30 Apr 11

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1 comment

How to make element unique in Java Collection?

jeanjiang @jeanjiang (30) • China 24 Apr 11

Java Collection can store many elements. Some Collection like Set must guarantee element unique. So, I want to know how to make it? In Java, which code can implement this function?

1 response

jackycui Methods - hasCode() and equals() can make element unique in Java Collection.

27 Apr 11

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1 comment

Java Stack and Queue

jeanjiang @jeanjiang (30) • China 25 Apr 11

From Data Construction, I learned two constructions - Stack and Queue. Stack is FILO and Queue is FIFO. In Java, if we want to use Stack and Queue, do we need to create two classes to implement these two construction, or we can...

queue

stack

1 response

jackycui Below is about Java Stack and Queue. Stack: http://www.javaol.net/2011/02/javas-stack-class/ Queue:

27 Apr 11

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1 comment

Comparable and Comparator

jeanjiang @jeanjiang (30) • China 24 Apr 11

When I start to sort a collection, I can use Class - Comparable or Comparator. My question is what is difference between Comparable and Comparator?

2 responses

jackycui We can use Class - Comparable and Comparator to sort a collection. Below article is about Sorting a collection. http://www.javaol.net/2011/02/sorting-java-collections/ It can help you to understand the difference between Comparable and Comparator...

24 Apr 11

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1 comment

are there any other ways to get/set a Java Bean

jeanjiang @jeanjiang (30) • China 24 Apr 11

Java Bean is a criterion a Java object. We can access a Java Bean with the simple way, treating a Java Bean as a Java object. My question is that is there any other way to access a Java Bean. Because I think Java Bean...

3 responses

jackycui You can use package - java.beans to handle it. Below is the link:

24 Apr 11

About Java package - java.beans

jeanjiang @jeanjiang (30) • China 17 Apr 11

Hi guys, Now in my process of learning Java, I meet some confusion about Java package - java.beans. I want to ask "What is Java Bean? Where do we need to use it". I think it is a fundamental knowledge in Java. If you have...

1 response

jackycui Java Bean is a criterion of Java object. Java Bean can be used in many places, especially in many frameworks, such as Struts, Spring and so on. If you want to learn how to use Java Bean in your project. Below is some materials about Java...

21 Apr 11

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1 comment

[Help]How to list the Property Names of a Bean

jeanjiang @jeanjiang (30) • China 16 Apr 11

I am learning the knowledge of Java Bean. I want to implement the function of listing the property names of Java Bean. Any one can help me? Thanks very much.

1 response

jackycui try as below: http://www.javaol.net/category/core/beans Hope there materials can help you to learn Java Bean easily.

20 Apr 11

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1 comment

Friends suggest me new browser than this IE

lou_is @lou_is (665) • India 3 Apr 11

I really hate that Internet Explorer because its of no use. Once i open that browser it will take at least 1 minute or more to open it completely. Every time it is giving trouble and some times it will get hang on that time i need...

8 responses

jackycui I like Firefox than IE. Now I always use Firefox to surf the internet. It is so good, and can give me the best experience.

6 Apr 11

I need a vacation from my vacation!

jillhill @jillhill (37354) • United States 3 Apr 11

I have been on vacation for the last week. On Sunday I went to Wisconsin Dells and met my daughter and her family at the Great Wolf Lodge. It's a big complex with indoor water park and tons of other things to do. We stayed for two...

16 responses •

6 people

jackycui Actually, I agree with your idea. Every day, we need to work for life, for example, getting up early, going back home late. If I have a holiday, I just want to sleep a lot and have a free time for all day. I am a lazy man, free is the besr vocation.

3 Apr 11

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2 people