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How to handle multiple heterogeneous inputs with Logstash?
...used tags for multiple file input:
input {
file {
type => "java"
path => "/usr/aaa/logs/stdout.log"
codec => multiline {
...
},
tags => ["aaa"]
}
file {
type => "java"
path => "/usr/bbb/logs/stdout.lo...
Android-java- How to sort a list of objects by a certain value within the object
... When should a class be Comparable and/or Comparator?
Try this -
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class TestSort {
public static void main(String args[]){
ToSort toSort1 = new ToSort(new Float(3), "3");
ToSort toSort2 =...
In Hibernate Validator 4.1+, what is the difference between @NotNull, @NotEmpty, and @NotBlank?
... explanation in the below link:
http://www.itprogrammingtutorials.com/2015/java/hibernate/hibernate-validator-diff-notblank-notempty/
@NotNull: Checks whether the value is not null, disregarding the content
@NotEmpty: Checks whether the value is not null nor empty. If it has just empty spaces, it ...
How to comment a block in Eclipse?
...le "//" comments and Ctrl-Shift-/ to toggle "/* */" comments. At least for Java, anyway - other tooling may have different shortcuts.
Ctrl-\ will remove a block of either comment, but won't add comments.
Note: As for Eclipse CDT 4.4.2, Ctrl-Shift-/ will not uncomment a "/* */" block comment. Use ...
Comparing Java enum members: == or equals()?
I know that Java enums are compiled to classes with private constructors and a bunch of public static members. When comparing two members of a given enum, I've always used .equals() , e.g.
...
Is it possible to view bytecode of Class file? [duplicate]
Java source code is compiled into bytecode, which is actually in the class file. Is it possible to view bytecode of a compiled class?
...
What is the use of printStackTrace() method in Java?
... e) {
e.printStackTrace();
}
System.exit(0);
Calling println(e):
java.lang.NullPointerException
Calling e.printStackTrace():
java.io.IOException
at package.Test.main(Test.java:74)
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How do you import classes in JSP?
I am a complete JSP beginner. I am trying to use a java.util.List in a JSP page. What do I need to do to use classes other than ones in java.lang ?
...
Getting A File's Mime Type In Java
I was just wondering how most people fetch a mime type from a file in Java? So far I've tried two utils: JMimeMagic & Mime-Util .
...
Functional programming - is immutability expensive? [closed]
...regarding the boxing/unboxing. If anything this should be a penalty on the java side right ? Isnt Int the preferred numeral type for Scala( vs Integer). So, there is no boxing happing on the scala side. Boxing is only an issue on the java side because autoboxing form scala Int to the java.lang.Inte...