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How can I generate a list or array of sequential integers in Java?
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With Java 8 it is so simple so it doesn't even need separate method anymore:
List<Integer> range = IntStream.rangeClosed(start, end)
.boxed().collect(Collectors.toList());
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Why is there no GIL in the Java Virtual Machine? Why does Python need one so bad?
...ne can provide some insight as to what's fundamentally different about the Java Virtual Machine that allows it to implement threads nicely without the need for a Global Interpreter Lock (GIL), while Python necessitates such an evil.
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What is the difference between & and && in Java?
I always thought that && operator in Java is used for verifying whether both its boolean operands are true , and the & operator is used to do Bit-wise operations on two integer types.
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Java: Getting a substring from a string starting after a particular character
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This can also get the filename
import java.nio.file.Paths;
import java.nio.file.Path;
Path path = Paths.get("/abc/def/ghfj.doc");
System.out.println(path.getFileName().toString());
Will print ghfj.doc
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Java Interfaces/Implementation naming convention [duplicate]
...ck. Not ITruck because it isn't an ITruck it is a Truck.
An Interface in Java is a Type. Then you have DumpTruck, TransferTruck, WreckerTruck, CementTruck, etc that implement Truck.
When you are using the Interface in place of a sub-class you just cast it to Truck. As in List<Truck>. Putti...
Downcasting in Java
Upcasting is allowed in Java, however downcasting gives a compile error.
11 Answers
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Sockets: Discover port availability using Java
...rammatically determine the availability of a port in a given machine using Java?
10 Answers
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What are the big improvements between guava and apache equivalent libraries?
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First of, as javamonkey79 explained, while Google Guava and Apache Commons do share similar features, they also both have functionality that is absent from their counterpart. Thus, limiting yourself to only one library might be unwise.
T...
How to sort a HashMap in Java [duplicate]
...cess order. And finally if you're doing a lot of this you might check out Java 1.6 and NavigableMap, awesome stuff!
– Mark Bennett
Jan 5 '12 at 0:58
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If using maven, usually you put log4j.properties under java or resources?
...our classpath in your run configuration: Run->Run Configurations...->Java Application->New select the Classpath tab, select Advanced and browse to your src/resources directory.
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