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Where is Java's Array indexOf?
...ity class.
If the array is not sorted and is not an array of primitives:
java.util.Arrays.asList(theArray).indexOf(o)
If the array is primitives and not sorted, one should use a solution offered by one of the other answers such as Kerem Baydoğan's, Andrew McKinlay's or Mishax's. The above code...
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...
Why can't overriding methods throw exceptions broader than the overridden method?
...
In my opinion, it is a fail in the Java syntax design. Polymorphism shouldn't limit the usage of exception handling. In fact, other computer languages don't do it (C#).
Moreover, a method is overriden in a more specialiced subclass so that it is more complex ...
What's the difference of strings within single or double quotes in groovy?
Is there any difference? Or just like javascript to let's input ' and " easier in strings?
2 Answers
...
how to read System environment variable in Spring applicationContext
...ath:config_#{systemProperties['env']}/db.properties" />
Combined with java ... -Denv=QA should solve your problem.
Note also a comment by @yiling:
In order to access system environment variable, that is OS level
variables as amoe commented, we can simply use "systemEnvironment"
instead...
Java Generics: Cannot cast List to List? [duplicate]
...hether it's safe or not.
Have a look at this section of Angelika Langer's Java Generics FAQ for more information.
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Most efficient way to make the first character of a String lower case?
...a nice alternative if you don't want to use a third-party library:
import java.beans.Introspector;
Assert.assertEquals("someInputString", Introspector.decapitalize("SomeInputString"));
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im...
Should private helper methods be static if they can be static
...Something(0);
t.doSomething(0);
}
}
Bytecode (retrieved with javap -c -private TestBytecodeSize):
Compiled from "TestBytecodeSize.java"
class TestBytecodeSize extends java.lang.Object{
TestBytecodeSize();
Code:
0: aload_0
1: invokespecial #1; //Method java/lang/Object."&...
Can I use assert on Android devices?
...0032c: 6e10 0c00 0000 |0002: invoke-virtual {v0}, Ljava/lang/Class;.desiredAssertionStatus:()Z // method@000c
000332: 0a00 |0005: move-result v0
000334: 3900 0600 |0006: if-nez v0, 000c // +0006
000338: 1210 ...
How to set a timer in android
...ask (a function that I create which does not change the UI)?
Use this the Java way:
http://docs.oracle.com/javase/1.5.0/docs/api/java/util/Timer.html
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