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Detect if Android device has Internet connection
... at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwork(StrictMode.java:1273) at java.net.InetAddress.lookupHostByName(InetAddress.java:431) ...
How to implement Enums in Ruby?
...idiom in Ruby? I'm looking for something which I can use (almost) like the Java/C# enums.
25 Answers
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What are the differences between “generic” types in C++ and Java?
Java has generics and C++ provides a very strong programming model with template s.
So then, what is the difference between C++ and Java generics?
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What is the difference between application server and web server?
... can serve web pages as well, but it's an application server for deploying Java. I realize a lot use the term "web server" loosely. But it just confuses people.
– ironarm
Jul 5 '17 at 16:07
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How to compare dates in Java? [duplicate]
How do I compare dates in between in Java?
11 Answers
11
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How can I use grep to find a word inside a folder?
...rent directory)
grep -nr 'MobileAppSer*' . (Would find MobileAppServlet.java or MobileAppServlet.class or MobileAppServlet.txt; 'MobileAppASer*.*' is another way to do the same thing.)
To check more parameters use man grep command.
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In Java, what is the best way to determine the size of an object?
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You can use the java.lang.instrument package
Compile and put this class in a JAR:
import java.lang.instrument.Instrumentation;
public class ObjectSizeFetcher {
private static Instrumentation instrumentation;
public static void pr...
Java 7 language features with Android
Just wondering if anyone has tried using new Java 7 language features with Android?
I know that Android reads the bytecode that Java spits out and turns it to dex. So I guess my question is can it understand the bytecode of Java 7?
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In Docker, what's the difference between a container and an image? [duplicate]
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This is a good analogy. If you know Java it helps. I was going to say an image is like an AWS AMI while a container is an EC2 Instance (running or stopped) - but you have to know Amazon Web Services to understand that analogy.
– phpguru
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Choosing Java vs Python on Google App Engine
Currently Google App Engine supports both Python & Java. Java support is less mature. However, Java seems to have a longer list of libraries and especially support for Java bytecode regardless of the languages used to write that code. Which language will give better performance and more power? Pleas...