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Difference between Pragma and Cache-Control headers?
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198
Pragma is the HTTP/1.0 implementation and cache-control is the HTTP/1.1 implementation of the s...
Why does Eclipse Java Package Explorer show question mark on some classes?
In the Eclipse Helios Java Package Explorer, I see the Java class icons display a small question mark to the right of the 'J', something like [J?]. This icon is shown on each class within one package in my project, but I cannot find an explanation for this in the documentation.
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How to declare an ArrayList with values? [duplicate]
ArrayList or List declaration in Java has questioned and answered how to declare an empty ArrayList but how do I declare an ArrayList with values?
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How do I trim a file extension from a String in Java?
What's the most efficient way to trim the suffix in Java, like this:
19 Answers
19
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What is the definition of “interface” in object oriented programming
...d respond to.
What adds to the confusion is that in some languages, like Java, there is an actual interface with its language specific semantics. In Java, for example, it is a set of method declarations, with no implementation, but an interface also corresponds to a type and obeys various typing r...
How to negate a method reference predicate
In Java 8, you can use a method reference to filter a stream, for example:
12 Answers
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Java Persistence / JPA: @Column vs @Basic
...g that Basic is designed for primitive fields
http://en.wikibooks.org/wiki/Java_Persistence/Basic_Attributes
A basic attribute is one where the attribute class is a simple type such as String, Number, Date or a primitive. A basic attribute's value can map directly to the column value in the databas...
Creation timestamp and last update timestamp with Hibernate and MySQL
...me with this elegant solution, create the following abstract class
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.MappedSuperclass;
import javax.persistence.PrePersist;
import javax.persistence.PreUpdate;
import javax.persistence.Temporal;
import javax.persistence...
Eclipse debugger always blocks on ThreadPoolExecutor without any obvious exception, why?
...it has reached a breakpoint, but it is not the case, in fact it stops on a Java source file that is ThreadPoolExecutor . There is no stack trace on the console, it just stops. Then if I click on resume it goes on and the app works perfectly. This is what shows in the debugger window:
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Update Item to Revision vs Revert to Revision
...py which were made after the selected revision (in your example rev. 96,97,98,99,100)
Your working copy is now in modified state.
The file content of both scenarions is same, however in first case you have an unmodified working copy and you cannot commit your changes(as your workingcopy is not poi...