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Is Java “pass-by-reference” or “pass-by-value”?
I always thought Java uses pass-by-reference .
81 Answers
81
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Should JAVA_HOME point to JDK or JRE?
I pointed the JAVA_HOME to C:\Program Files (x86)\Java\jre7 . It works fine. Afterwards, I unzipped ant and set up the environment variables related to Ant, I got the following error messages after typing "ant -version"
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How is the default max Java heap size determined?
If I omit the -Xmxn option from the Java command line then a default value will be used. According to Java documentation
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Could not reserve enough space for object heap
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Doesn't work for me on Windows 8 with x86 or x64 Java.
– AndrewSmiley
Jul 27 '15 at 13:13
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show 7 more comments
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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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Maven build failed: “Unable to locate the Javac Compiler in: jre or jdk issue”
I have my JAVA_HOME set to:
32 Answers
32
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How to do URL decoding in Java?
In Java, I want to convert this:
9 Answers
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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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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