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Best implementation for hashCode method for a collection
...ses reasonable good implementation was proposed in Josh Bloch's Effective Java in Item 8 (second edition). The best thing is to look it up there because the author explains there why the approach is good.
A short version
Create a int result and assign a non-zero value.
For every field f tested i...
Converting Java objects to JSON with Jackson
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I know this is old (and I am new to java), but I ran into the same problem. And the answers were not as clear to me as a newbie... so I thought I would add what I learned.
I used a third-party library to aid in the endeavor: org.codehaus.jackson
All of the dow...
addEventListener vs onclick
... Chris BakerChris Baker
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Can I replace groups in Java regex?
...ode, and I want to know, if I can replace only groups (not all pattern) in Java regex.
Code:
7 Answers
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Strip Leading and Trailing Spaces From Java String
... there a convenience method to strip any leading or trailing spaces from a Java String?
6 Answers
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What package naming convention do you use for personal/hobby projects in Java?
I'm already familiar with the standard Java package naming convention of using a domain name to create a unique package name (i.e. package com.stackoverflow.widgets ). However, I've never seen any recommendations for how to choose package names for personal projects. I assume because this is becaus...
Java: What is the difference between and ?
...tializer) is marked as native... grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/…
– Cade Daniel
Apr 24 '18 at 20:52
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How to get names of classes inside a jar file?
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Unfortunately, Java doesn't provide an easy way to list classes in the "native" JRE. That leaves you with a couple of options: (a) for any given JAR file, you can list the entries inside that JAR file, find the .class files, and then determ...
Most efficient way to store thousand telephone numbers
... result is 32 + 999 * (1 + 7) + variable(0..782) bits = 1003 + variable(0..98) bytes.
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How do I call one constructor from another in Java?
...structor parameters are used, consider a builder. See Item 2 of "Effective Java" by Joshua Bloch.
– koppor
Nov 13 '12 at 20:16
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