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How do I set environment variables from Java?
How do I set environment variables from Java? I see that I can do this for subprocesses using ProcessBuilder . I have several subprocesses to start, though, so I'd rather modify the current process's environment and let the subprocesses inherit it.
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fastest (low latency) method for Inter Process Communication between Java and C/C++
I have a Java app, connecting through TCP socket to a "server" developed in C/C++.
10 Answers
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Java Logging vs Log4J [closed]
Is it still worth to add the log4j library to a Java 5 project just to log
let's say some exceptions to a file with some nice rollover settings.
Or will the standard util.logging facility do the job as well?
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Comparing two java.util.Dates to see if they are in the same day
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Joda-Time
As for adding a dependency, I'm afraid the java.util.Date & .Calendar really are so bad that the first thing I do to any new project is add the Joda-Time library. In Java 8 you can use the new java.time package, inspired by Joda-Time.
The core of Joda-Time is the...
Immutable array in Java
Is there an immutable alternative to the primitive arrays in Java? Making a primitive array final doesn't actually prevent one from doing something like
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为什么你有10年经验，但成不了专家？ - 杂谈 - 清泛网 - 专注C/C++及内核技术
...状态，非要刻意学习各种新能力，把它做到96分、97分、98分……即使，这个职位对他的要求只有80分。
其实即使职场上最简单的『发邮件』『沟通电话』都有很多技巧、有很多可以提升的地方。
这些基础任务所有人都可以...
How to handle invalid SSL certificates with Apache HttpClient? [duplicate]
...st store that includes your cert
Add the cert for that site to the default java trust store.
Here is a sample program that creates a (mostly worthless) SSL Context that accepts any cert:
import java.net.URL;
import java.security.SecureRandom;
import java.security.cert.CertificateException;
import...
StringBuilder vs String concatenation in toString() in Java
...e spec is: To increase the performance of repeated string concatenation, a Java compiler _may_ use the StringBuffer class or a similar technique to reduce the number of intermediate String objects that are created by evaluation of an expression. The key word there being may. Given that this is offi...
Java Date vs Calendar
... FYI, the terribly troublesome old date-time classes such as java.util.Date, java.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes built into Java 8 and later. See Tutorial by Oracle.
– Basil Bourque
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A variable modified inside a while loop is not remembered
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Mark Amery
98.9k4848 gold badges336336 silver badges379379 bronze badges
answered May 31 '13 at 16:09
JensJens
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