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JMS and AMQP - RabbitMQ
...e not a teacher :) ) Let's see all of these one by one.
As you know:
The Java Message Service (JMS) API is a Java Message Oriented Middleware (MOM) API for sending messages between two or more clients. JMS is a part of the Java Platform, Enterprise Edition, and is defined by a specification develo...
Converting an int to a binary string representation in Java?
...(ideally, simplest) to convert an int to a binary string representation in Java?
16 Answers
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A simple scenario using wait() and notify() in java
...ad will call wait() again.
As some of the other answers have mentioned, Java 1.5 introduced a new concurrency library (in the java.util.concurrent package) which was designed to provide a higher level abstraction over the wait/notify mechanism. Using these new features, you could rewrite the orig...
Array Length in Java
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Can you show the javadoc? I don't know where this "length" property is.
– Philip Rego
Feb 13 '18 at 18:44
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What is the memory consumption of an object in Java?
... the actual object layout, footprint, and references, you can use the JOL (Java Object Layout) tool.
Object headers and Object references
In a modern 64-bit JDK, an object has a 12-byte header, padded to a multiple of 8 bytes, so the minimum object size is 16 bytes. For 32-bit JVMs, the overhead ...
How to break out or exit a method in Java?
The keyword break in Java can be used for breaking out of a loop or switch statement. Is there anything which can be used to break from a method?
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ProcessBuilder: Forwarding stdout and stderr of started processes without blocking the main thread
I'm building a process in Java using ProcessBuilder as follows:
10 Answers
10
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Rethrowing exceptions in Java without losing the stack trace
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In Java 7 compiler for such rethrow is more inteligent. Now it works fine with specific "throws" exceptions in containing method.
– Waldemar Wosiński
Jan 29 '13 at 16:18
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Java array reflection: isArray vs. instanceof
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Right, in Java, primitive data types are not objects, and don't extend java.lang.Object, so that makes sense. But instanceof can still be used to test for primitive arrays.
– erickson
Feb 13 '13 a...
Why are only final variables accessible in anonymous class?
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As noted in comments, some of this becomes irrelevant in Java 8, where final can be implicit. Only an effectively final variable can be used in an anonymous inner class or lambda expression though.
It's basically due to the way Java manages closures.
When you create an instance...