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What is a good Java library to zip/unzip files? [closed]
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i got org.zeroturnaround.zip.ZipException: java.io.FileNotFoundException: images\001GL.JPG: open failed: EINVAL (Invalid argument) error
– Smit Patel
Jan 16 '14 at 11:30
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C# Set collection?
Does anyone know if there is a good equivalent to Java's Set collection in C#? I know that you can somewhat mimic a set using a Dictionary or a HashTable by populating but ignoring the values, but that's not a very elegant way.
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How to disable breadcrumbs in Eclipse
How can I disable the Java editor breadcrumb in Eclipse?
11 Answers
11
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Read error response body in Java
In Java, this code throws an exception when the HTTP result is 404 range:
8 Answers
8
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How do I use a PriorityQueue?
...d.
Here's an example of a priority queue sorting by string length:
// Test.java
import java.util.Comparator;
import java.util.PriorityQueue;
public class Test {
public static void main(String[] args) {
Comparator<String> comparator = new StringLengthComparator();
PriorityQ...
Java regex capturing groups indexes
...r capturing groups in different branches of alternation.
Group name
From Java 7, you can define a named capturing group (?<name>pattern), and you can access the content matched with Matcher.group(String name). The regex is longer, but the code is more meaningful, since it indicates what you ...
Java generics - why is “extends T” allowed but not “implements T”?
I wonder if there is a special reason in Java for using always " extends " rather than " implements " for defining bounds of typeparameters.
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Is it bad practice to make a setter return “this”?
Is it a good or bad idea to make setters in java return "this"?
27 Answers
27
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Is there a Java standard “both null or equal” static method?
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With Java 7 you can now directly do a null safe equals:
Objects.equals(x, y)
(The Jakarta Commons library ObjectUtils.equals() has become obsolete with Java 7)
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What does Maven do, in theory and in practice? When is it worth to use it? [closed]
I am about to start a Java project just for practice. I've read about Maven, but I don't actually understand when it is meant to be used.
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