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java.lang.NoClassDefFoundError: Could not initialize class XXX
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It would be more easily traceable if Java would throw an error CouldNotInitializeStaticPartOfClassError or something. Then we as developer would know where to look.
– Maarten
Nov 14 '18 at 11:12
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Is it bad practice to make a setter return “this”?
Is it a good or bad idea to make setters in java return "this"?
27 Answers
27
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Java generics - why is “extends T” allowed but not “implements T”?
I wonder if there is a special reason in Java for using always " extends " rather than " implements " for defining bounds of typeparameters.
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String replacement in java, similar to a velocity template
Is there any String replacement mechanism in Java, where I can pass objects with a text, and it replaces the string as it occurs.
For example, the text is :
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How do I make my string comparison case insensitive?
I created a Java program to compare two strings:
12 Answers
12
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Is there a Java standard “both null or equal” static method?
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With Java 7 you can now directly do a null safe equals:
Objects.equals(x, y)
(The Jakarta Commons library ObjectUtils.equals() has become obsolete with Java 7)
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Format an Integer using Java String Format
I am wondering if it is possible, using the String.format method in Java, to give an integer preceding zeros?
3 Answers
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What does Maven do, in theory and in practice? When is it worth to use it? [closed]
I am about to start a Java project just for practice. I've read about Maven, but I don't actually understand when it is meant to be used.
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How to gracefully handle the SIGKILL signal in Java
...hutdown hooks.
Registers a new virtual-machine shutdown hook.
The Java virtual machine shuts down in response to two kinds of events:
The program exits normally, when the last non-daemon thread exits or when the exit (equivalently, System.exit) method is invoked, or
The virtual ma...
Covariance, Invariance and Contravariance explained in plain English?
... I read some articles about Covariance, Contravariance (and Invariance) in Java. I read the English and German Wikipedia article, and some other blog posts and articles from IBM.
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