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What is reflection and why is it useful?
...em (or itself).
For example, say you have an object of an unknown type in Java, and you would like to call a 'doSomething' method on it if one exists. Java's static typing system isn't really designed to support this unless the object conforms to a known interface, but using reflection, your code c...
Converting Long to Date in Java returns 1970
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tl;dr
java.time.Instant // Represent a moment as seen in UTC. Internally, a count of nanoseconds since 1970-01-01T00:00Z.
.ofEpochSecond( 1_220_227_200L ) // Pass a count of whole seconds since the same epoch...
How to free memory in Java?
Is there a way to free memory in Java, similar to C's free() function? Or is setting the object to null and relying on GC the only option?
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Has Facebook sharer.php changed to no longer accept detailed parameters?
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Starting from July 18, 2017 Facebook has decided to disregard custom parameters set by users. T...
Is an array an object in java
In java we can declare an array like
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Maven build failed: “Unable to locate the Javac Compiler in: jre or jdk issue”
I have my JAVA_HOME set to:
32 Answers
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How to do URL decoding in Java?
In Java, I want to convert this:
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9
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Is “Java Concurrency In Practice” still valid? [closed]
Is Java Concurrency in Practice still valid? I am wondering whether the ideas, concepts and implementation described in the book are still compliant with the latest Java versions.
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Difference between acceptance test and functional test?
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Mark Amery
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answered Jul 30 '10 at 11:55
Patrick Cu...
Unable to find valid certification path to requested target - error even after cert imported
I have a Java client trying to access a server with a self-signed certificate.
10 Answers
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