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Use of Java's Collections.singletonList()?
What is the use of Collections.singletonList() in Java? I understand that it returns a list with one element. Why would I want to have a separate method to do that? How does immutability play a role here?
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Eclipse error: 'Failed to create the Java Virtual Machine'
...ms\jdk1.6\bin lines.
Also, a general recommendation: set -Dosgi.requiredJavaVersion=1.6, not 1.5.
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What is the difference between instanceof and Class.isAssignableFrom(…)?
.../ syntax error
int.class.isAssignableFrom(int.class) // true
See http://java.sun.com/javase/6/docs/api/java/lang/Class.html#isAssignableFrom(java.lang.Class).
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Best Java obfuscator? [closed]
I am developing a security software and want to obfuscate my java code so it will become impossible to reverse engineer. What is the most reliable java obfuscator ?
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Why when a constructor is annotated with @JsonCreator, its arguments must be annotated with @JsonPro
...object to the constructor.
It is not possible to access parameter names in Java using reflection - that's why you have to repeat this information in annotations.
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java.util.Date to XMLGregorianCalendar
Isn't there a convenient way of getting from a java.util.Date to a XMLGregorianCalendar?
9 Answers
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How to increase the Java stack size?
...o this, and I've also got many useful answers and comments relevant to how Java handles the situation where a large runtime stack is needed. I've extended my question with the summary of the responses.
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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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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...
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...