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Polymorphism vs Overriding vs Overloading
In terms of Java, when someone asks:
21 Answers
21
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Difference between getAttribute() and getParameter()
...ple,consider about first.jsp,
//First Page : first.jsp
<%@ page import="java.util.*" import="java.io.*"%>
<% request.setAttribute("PAGE", "first.jsp");%>
<jsp:forward page="/second.jsp"/>
and second.jsp:
<%@ page import="java.util.*" import="java.io.*"%>
From Which Page : &l...
Why not use Double or Float to represent currency?
...ent the base 10 multiples that we use for money. This issue isn't just for Java, it's for any programming language that uses base 2 floating-point types.
In base 10, you can write 10.25 as 1025 * 10-2 (an integer times a power of 10). IEEE-754 floating-point numbers are different, but a very simple...
How to include *.so library in Android Studio?
.../
└── main/
├── AndroidManifest.xml
├── java/
└── jniLibs/
├── arm64-v8a/ <-- ARM 64bit
│ └── yourlib.so
├── armeabi-v7a/ <-- ARM 32bit
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Java 8: performance of Streams vs Collections
I'm new to Java 8. I still don't know the API in depth, but I've made a small informal benchmark to compare the performance of the new Streams API vs the good old Collections.
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Java ArrayList replace at specific index
I need help with this java please. I created an ArrayList of bulbs, and I'm trying to replace a bulb at specific index with another bulb. So with the following heading, how do I proceed?
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Why do we need break after case statements?
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Java comes from C and that is the syntax from C.
There are times where you want multiple case statements to just have one execution path.
Below is a sample that will tell you how many days in a month.
class SwitchDemo2 {
...
Difference between FetchType LAZY and EAGER in Java Persistence API?
I am a newbie to Java Persistence API and Hibernate.
15 Answers
15
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What is PECS (Producer Extends Consumer Super)?
... syntax and assumes declaration-site variance, which is quite different to Java's weird call-site variance... Maybe I should write a more detailed answer that clearly shows how this sketch applies to Java...
– Andrey Tyukin
Jun 15 '14 at 23:11
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Java regular expression OR operator
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