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Compare two objects in Java with possible null values
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This is what Java internal code uses (on other compare methods):
public static boolean compare(String str1, String str2) {
return (str1 == null ? str2 == null : str1.equals(str2));
}
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C# equivalent to Java's charAt()?
I know we can use the charAt() method in Java get an individual character in a string by specifying its position. Is there an equivalent method in C#?
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Building vs. Compiling (Java)
... all the steps required to create a "deliverable" of your software. In the Java world, this typically includes:
Generating sources (sometimes).
Compiling sources.
Compiling test sources.
Executing tests (unit tests, integration tests, etc).
Packaging (into jar, war, ejb-jar, ear).
Running health c...
How to use classes from .jar files?
I read the Java tutorials on Sun for JAR files, but I still can't find a solution for my problem. I need to use a class from a jar file called jtwitter.jar, I downloaded the file, and tried executing it (I found out yesterday that .jar files can be executed by double clicking on them) and Vista gave...
Utils to read resource text file to String (Java) [closed]
...y the core library seems allergic to modeling real-life use cases. Look at Java 7's Files, and tell me why reading everything from a classpath resource wasn't included there? Or at least using a standardized 'filesystem'.
– Dilum Ranatunga
Mar 7 '14 at 18:36
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Java code To convert byte to Hexadecimal
...m.out.println(sb.toString());
// prints "FF 00 01 02 03 "
See also
java.util.Formatter syntax
%[flags][width]conversion
Flag '0' - The result will be zero-padded
Width 2
Conversion 'X' - The result is formatted as a hexadecimal integer, uppercase
Looking at the text of the questio...
What is the difference between a.getClass() and A.class in Java?
In Java what pros/cons exist surrounding the choice to use a.getClass() or A.class ? Either can be used wherever a Class<?> is expected, but I imagine that there would be performance or other subtle benefits to using both in different circumstances (just like there are with Class.forName...
Is there a way to access an iteration-counter in Java's for-each loop?
Is there a way in Java's for-each loop
15 Answers
15
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How to wait for a number of threads to complete?
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The book “Effective Java” recommends avoiding thread groups (item 73).
– Bastien Léonard
Aug 9 '09 at 20:47
2
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Wrapping chained method calls on a separate line in Eclipse for Java
...you exactly need is the following:
Windows: Window → Preferences → Java → Code Style
→ Formatter → Edit → Line wrapping (tab)
Mac OS: ADT → Preferences → Java → Code Style
→ Formatter → Edit → Line wrapping (tab)
Then, in the list at the left, select:
Fu...