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Checking if a string is empty or null in Java [duplicate]
...() just uses "return cs == null || cs.length() == 0;" Also, since commons.lang 2.0, isEmpty() no longer trims the String. So, StringUtils.isEmpty(" ") returns false - but StringUtils.isBlank(" ") returns true.
– eze
Jul 14 '14 at 15:52
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how to set desired language in git-gui?
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For Windows users the are two choices as well:
1) Set the LANG environment variable to en.
a) Overall for Windows: http://www.itechtalk.com/thread3595.html
b) For the git shell only:
If you don't want to affect anything else except git applications you might add the following lin...
Where to get “UTF-8” string literal in Java?
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Now I use org.apache.commons.lang3.CharEncoding.UTF_8 constant from commons-lang.
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java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState
I'm using the support library for my app. In my FragmentActivity I'm using an AsyncTask for downloading data from internet. In the onPreExecute() method I add a Fragment and in the onPostExecute() method I remove it again. When the orientation is changed in between, I get the above mentioned excepti...
How do you Force Garbage Collection from the Shell?
...>open host:jmxport
#Connection to host:jmxport is opened
$>bean java.lang:type=Memory
#bean is set to java.lang:type=Memory
$>run gc
#calling operation gc of mbean java.lang:type=Memory
#operation returns:
null
$>quit
#bye
Look at the docs on the jmxterm web site for information about...
How do I check that a Java String is not all whitespaces?
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I would use the Apache Commons Lang library. It has a class called StringUtils that is useful for all sorts of String operations. For checking if a String is not all whitespaces, you can use the following:
StringUtils.isBlank(<your string>)
Here i...
How to capitalize the first letter of a String in Java?
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commons lang is always better than writing your own function except in rare cases where you know better. If you didn't go read the commons lang java doc on the capitalize function, you shouldn't be writing your own.
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What is the difference between a pseudo-class and a pseudo-element in CSS?
...bstractions about the document tree beyond those specified by the document language. For instance, document languages do not offer mechanisms to access the first letter or first line of an element's content. Pseudo-elements allow authors to refer to this otherwise inaccessible information. Pseudo-el...
Retrieving the inherited attribute names/values using Java Reflection
...stead you wanted to rely upon a library to accomplish this, Apache Commons Lang version 3.2+ provides FieldUtils.getAllFieldsList:
import java.lang.reflect.Field;
import java.util.AbstractCollection;
import java.util.AbstractList;
import java.util.AbstractSequentialList;
import java.util.Arrays;
im...
java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist
I'm currently working on a project in which I have to use purely native ndk. It worked when I try running an helloworld example from Irrlicht engine source. Then I try using it in my project following the same format of that example. But I got:
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