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Java: difference between strong/soft/weak/phantom reference
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Java provides two different types/classes of Reference Objects: strong and weak. Weak Reference Objects can be further divided into soft and phantom.
Strong
Weak
soft
phantom
Let's go point by point.
Strong Reference...
linux 下巧妙使用squid代理服务器 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...默认没有安装Squid
服务，读者可以使用下面的命令检查系统是否已经安装了
Squid服务或查看已经安装了何种版本。
rpm -q squid
2.Squid代理服务的基本配置
2.1 Squid主配置文件是/etc/squid/squid.conf ，最基本的设置如下。
http_port...
What causes “Unable to access jarfile” error?
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I had encountered this issue when I had run my Jar file as
java -jar TestJar
instead of
java -jar TestJar.jar
Missing the extension .jar also causes this issue.
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Calling Java varargs method with single null argument?
If I have a vararg Java method foo(Object ...arg) and I call foo(null, null) , I have both arg[0] and arg[1] as null s. But if I call foo(null) , arg itself is null. Why is this happening?
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Python vs Cpython
...plementations of the Python programming language; these are implemented in Java, C# and RPython (a subset of Python), respectively. Jython compiles your Python code to Java bytecode, so your Python code can run on the JVM. IronPython lets you run Python on the Microsoft CLR. And PyPy, being implemen...
Generate UML Class Diagram from Java Project [closed]
Is there a good tool that can help to reverse engineer Java classes to UML that will show an overview of how my classes are related to each other? It doesn't need to decompile from JAR file because I have the sources. I know there are quite a few out there but most of those can only generate individ...
Custom thread pool in Java 8 parallel stream
Is it possible to specify a custom thread pool for Java 8 parallel stream ? I can not find it anywhere.
15 Answers
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C++ equivalent of StringBuffer/StringBuilder?
...ent string concatenation functionality, similar to C#'s StringBuilder or Java's StringBuffer ?
10 Answers
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Why don't Java's +=, -=, *=, /= compound assignment operators require casting?
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A likely reason to why the Java compiler adds a typecast is because if you're trying to perform arithmetic on incompatible types, there is no way of performing a typecast of the result using the contracted form. A typecast of the result is generally mo...
How do I import the javax.servlet API in my Eclipse project?
I want to develop with Servlets in Eclipse, but it says that the package javax.servlet cannot be resolved. How can I add javax.servlet package to my Eclipse project?
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