Java Archives - Page 17 of 336

I don’t understand what is the actual difference between annotations javax.transaction.Transactional and org.springframework.transaction.annotation.Transactional? Is org.springframework.transaction.annotation.Transactional an extension of javax.transaction.Transactional or they have totally ...

June 1, 2022
0 Comments

Java, Programming

IT Nursery

How to use a servlet filter in Java to change an incoming servlet request url?

How can I use a servlet filter to change an incoming servlet request url from http://nm-java.appspot.com/Check_License/Dir_My_App/Dir_ABC/My_Obj_123 to http://nm-java.appspot.com/Check_License?Contact_Id=My_Obj_123 ? Update: according to BalusC’s ...

June 1, 2022
0 Comments

Java, Programming

IT Nursery

Java: difference between strong/soft/weak/phantom reference

I have read this article about different types of references in Java (strong, soft, weak, phantom), but I don’t really understand it. What ...

June 1, 2022
0 Comments

Java, Programming

IT Nursery

Joda-Time: what’s the difference between Period, Interval and Duration?

In Joda-Time 2, what is the difference between the three kinds of time spans: Period Interval Duration Why do we need three classes? ...

June 1, 2022
0 Comments

Java, Programming

IT Nursery

How can you escape the @ character in javadoc?

How can I escape the @ symbol in javadoc? I am trying to use it inside a {@code} tag, which is inside <pre> ...

June 1, 2022
0 Comments

Java, Programming

IT Nursery

Immutable vs Unmodifiable collection [duplicate]

This question already has answers here: Java Immutable Collections (7 answers) Closed 2 days ago. From the Collections Framework Overview: Collections that do ...

June 1, 2022
0 Comments

Java, Programming

IT Nursery

Java SE 6 vs. JRE 1.6 vs. JDK 1.6 – What do these mean?

I see many different Java terms floating around. I need to install the JDK 1.6. It was my understanding that Java 6 == ...

June 1, 2022
0 Comments

Java, Programming

IT Nursery

Efficient method to generate UUID String in Java (UUID.randomUUID().toString() without the dashes)

I would like an efficient utility to generate unique sequences of bytes. UUID is a good candidate but UUID.randomUUID().toString() generates stuff like 44e128a5-ac7a-4c9a-be4c-224b6bf81b20 ...

June 1, 2022
0 Comments