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Get item in the list in Scala?
...or (immutable) or ArrayBuffer (mutable) or possibly Array (which is just a Java array, except again you index into it with (i) instead of [i]).
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What integer hash function are good that accepts an integer hash key?
... built-in integer multiplication unit. C code, assuming int is 32 bit (for Java, replace >> with >>> and remove unsigned):
unsigned int hash(unsigned int x) {
x = ((x >> 16) ^ x) * 0x45d9f3b;
x = ((x >> 16) ^ x) * 0x45d9f3b;
x = (x >> 16) ^ x;
return...
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 comment a JSP expression?
...'t appeal to you:
<% /*= map.size()*/ %>
Code Conventions for the JavaServer Pages Technology Version 1.x Language has details about the different commenting options available to you (but has a complete lack of link targets, so I can't link you directly to the relevant section - boo!)
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What does cmd /C mean? [closed]
I can understand cmd but not cmd /c . I was trying to invoke a java program from the current for which I use Runtime.getRuntime().exec("cmd /C java helloworld"); There arises my doubt.
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Javascript date.getYear() returns 111 in 2011? [duplicate]
I have this javascript for automatically setting a date filter to the first and last day of the previous month:
3 Answers
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How to always show scrollbar
...xml which is equivalent to ScrollView.setScrollbarFadingEnabled(false); in java code.
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How to sort ArrayList in decreasing order?
How to sort an ArrayList<Long> in Java in decreasing order?
14 Answers
14
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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...