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How to make a Java class that implements one interface with two generic types?
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I'll say it: This is a flaw with Java. There's absolutely no reason we shouldn't be allowed to have multiple implementations of the same interface, provided that the implementations take different arguments.
– gromit190
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Is asynchronous jdbc call possible?
...creating millions of actors on a standard JVM setup.
If you're targeting Java, Akka Framework is an Actor model implementation that has a good API both for Java and Scala.
Aside from that, the synchronous nature of JDBC makes perfect sense to me. The cost of a database session is far higher tha...
Why can't we have static method in a (non-static) inner class?
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In C++ you can have, so this is a bug in the Java language.
– Industrial-antidepressant
Oct 23 '13 at 16:57
39
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How to unescape HTML character entities in Java?
... more entries to the map if you need HTML 4.
package com.example;
import java.io.StringWriter;
import java.util.HashMap;
public class StringUtils {
public static final String unescapeHtml3(final String input) {
StringWriter writer = null;
int len = input.length();
int...
How do I apply the for-each loop to every character in a String?
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@Pacerier No, the current Java compilers will never optimize code.
– RAnders00
Feb 11 '16 at 20:16
1
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Difference between >>> and >>
What is the difference between >>> and >> operators in Java?
7 Answers
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How to view the contents of an Android APK file?
...install. It is written in perl (as opposed to APKTool, which is written in Java), and uses aapt for the actual decompilation. It also does not decompile attrib resources yet (which APKTool does).
The meaning of the name is "aapt", Android's resource compiler, shifted down one letter.
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How to get the first element of the List or Set? [duplicate]
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See the javadoc
of List
list.get(0);
or Set
set.iterator().next();
and check the size before using the above methods by invoking isEmpty()
!list_or_set.isEmpty()
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Determining if an Object is of primitive type
...lt into the standard libraries for this, but it's easy to code up:
import java.util.*;
public class Test
{
public static void main(String[] args)
{
System.out.println(isWrapperType(String.class));
System.out.println(isWrapperType(Integer.class));
}
private ...
What is the difference between getFields and getDeclaredFields in Java reflection
...tween the getFields method and the getDeclaredFields method when using Java reflection.
4 Answers
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