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How to delete a whole folder and content?
...the link is deleted and not the target of the link." from docs.oracle.com/javase/tutorial/essential/io/delete.html
– corbin
Apr 6 '15 at 17:58
3
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Difference between Arrays.asList(array) and new ArrayList(Arrays.asList(array))
...his is because ArrayList resulting from Arrays.asList() is not of the type java.util.ArrayList . Arrays.asList() creates an ArrayList of type java.util.Arrays$ArrayList which does not extend java.util.ArrayList but only extends java.util.AbstractList
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What is the difference between JavaConverters and JavaConversions in Scala?
In scala.collection , there are two very similar objects JavaConversions and JavaConverters .
4 Answers
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What is the concept of erasure in generics in Java?
What is the concept of erasure in generics in Java?
8 Answers
8
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Convert Enumeration to a Set/List
Is there some one-liner bridge method to dump a given Enumeration to java.util.List or java.util.Set?
6 Answers
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Can we write our own iterator in Java?
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Sure. An iterator is just an implementation of the java.util.Iterator interface. If you're using an existing iterable object (say, a LinkedList) from java.util, you'll need to either subclass it and override its iterator function so that you return your own, or provide a mean...
What is the maximum depth of the java call stack?
...at this is tail recursive and shouldn't ever overflow? Edit: Sorry. In Java it crashed at 8027; in Scala it got up to 8594755 before I got bored.
– arya
Feb 15 '15 at 2:47
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AssertContains on strings in jUnit
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assertThat(person.getName(), containsString("myName"));
// Error Message
java.lang.AssertionError:
Expected: a string containing "myName"
got: "some other name"
You can optional add an even more detail error message.
// Hamcrest assertion with custom error message
assertThat("my error mess...
Showing a Spring transaction in log
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Most interesting log informations of JtaTransactionManager.java (if this question is still about the JtaTransactionManager) are logged at DEBUG priority. Assuming you have a log4j.properties somewhere on the classpath, I'd thus suggest to use:
log4j.logger.org.springframework.transa...
Retrieve version from maven pom.xml in code
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Assuming you're using Java, you can:
Create a .properties file in (most commonly) your src/main/resources directory (but in step 4 you could tell it to look elsewhere).
Set the value of some property in your .properties file using the standard M...