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How to use IntelliJ IDEA to find all unused code?
When I am in a .java file the unused code is usually grayed out or has a green underline saying this code will probably (probably because of some weird JNI/Reflection corner cases) be unused. But I have this project with thousands of Java files and I want to find ALL INSTANCES of such probable-unuse...
Remove the image from a imageview Android [duplicate]
...erence for the picture), which is stored as an int, but displayed in the R.java class as a hex value, 0xf2fs... So assuming this reference exist it will show a picture, if you later pass that same imageview a reference which does not exist the old picture will no longer show. So, if you pass it 0, o...
DTO and DAO concepts and MVC [closed]
... use DTO and DAO , and when should we use them. I am developing a GUI Java software to do with inserting, editing, deleting data. But I am struggling to distinguish between DTO/DAO and Model , View , Controller (MVC) Structure? Are they similar, which is better to use when interacting w...
Splitting string with pipe character (“|”) [duplicate]
...usly getting the same problem and thought it was related to my newbie (for java 8) use of Array.AsList or Arrays.stream - thanks devnull!
– JGlass
Sep 19 '18 at 19:50
add a co...
org.apache.tomcat.util.modeler.ManagedBean tomcat启动不了 - Python - 清泛IT社区，为创新赋能！
java版本太低了，下载新版本java：
http://www.oracle.com/technetwork/java/javase/downloads/jdk6-jsp-136632.html
Best way to create enum of strings?
... Strings(final String text) {
this.text = text;
}
/* (non-Javadoc)
* @see java.lang.Enum#toString()
*/
@Override
public String toString() {
return text;
}
}
Alternatively, you can create a getter method for text.
You can now do Strings.STRING_ONE.toS...
HashMap to return default value for non-found keys?
...
[Update]
As noted by other answers and commenters, as of Java 8 you can simply call Map#getOrDefault(...).
[Original]
There's no Map implementation that does this exactly but it would be trivial to implement your own by extending HashMap:
public class DefaultHashMap<K,V> e...
How to view AndroidManifest.xml from APK file?
...
I get error: Exception in thread "main" java.lang.IllegalStateException: The tools directory property is not set, please make sure you are executing apkanalyzer, I didn't know how to solve it
– jk2K
Jun 1 at 9:48
...
What is the “-->” operator in C++?
...
In Java it also compiles :)
– Steven Devijver
Feb 12 '13 at 8:07
45
...
How to change Elasticsearch max memory size
... when I ran ps aux | grep elasticsearch the output still showed:
/usr/bin/java -Xms2g -Xmx2g # aka 2G min and max ram
I had to make these changes in:
/etc/elasticsearch/jvm.options
# Xms represents the initial size of total heap space
# Xmx represents the maximum size of total heap space
-Xms1...