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Best way to convert list to comma separated string in java [duplicate]
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Java doesn't support single quotes
– Passionate Engineer
Oct 18 '15 at 15:21
10
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JAVA“无法启动该应用程序”的解决办法 - 更多技术 - 清泛网 - 专注C/C++及内核技术
JAVA“无法启动该应用程序”的解决办法调用虚拟控制台时出现了如下的错误，无法启动该应用程序，如下：是因为JAVA的安全设置问题，进入C:Program Files (x86)Javajre7in，打开j...调用虚拟控制台时出现了如下的错误，“无法启动该...
Check if a Class Object is subclass of another Class Object in Java
I'm playing around with Java's reflection API and trying to handle some fields. Now I'm stuck with identifying the type of my fields. Strings are easy, just do myField.getType().equals(String.class) . The same applies for other non-derived classes. But how do I check derived classes? E.g. LinkedLi...
Is it wrong to use Deprecated methods or classes in Java?
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1. Is it wrong to use Deprecated methods or classes in Java?
From the definition of deprecated:
A program element annotated @Deprecated is one that programmers are discouraged from using, typically because it is dangerous, or because a better alternative exists.
The metho...
Do subclasses inherit private fields?
...fferent than the notion of inheritance for a class. As is the case in the java world, where there is a question of semantics the arbiter is the Java Language Specification (currently 3rd edition).
As the JLS states (https://docs.oracle.com/javase/specs/jls/se8/html/jls-8.html#jls-8.2):
Membe...
When is the finalize() method called in Java?
...est not to rely on finalize() to do any cleaning up etc.
According to the Javadoc (which it would be worth reading), it is:
Called by the garbage collector on an object when garbage collection determines that there are no more references to the object.
As Joachim pointed out, this may never h...
What is the best way to tell if a character is a letter or number in Java without using regexes?
...way to recognize if a string.charAt(index) is an A-z letter or a number in Java without using regular expressions? Thanks.
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How to avoid java.util.ConcurrentModificationException when iterating through and removing elements
...er it I have to remove elements at the same time. Obviously this throws a java.util.ConcurrentModificationException .
20 A...
console.writeline and System.out.println
...m.out.println("Console is: " + System.console());
}
}
results in:
$ java ConsoleTest
Console is: java.io.Console@2747ee05
$ java ConsoleTest </dev/null
Console is: null
$ java ConsoleTest | cat
Console is: null
The reason Console exists is to provide features that are useful in the speci...
Force point (“.”) as decimal separator in java
...nswer to the question and beside as programmer this is what I want. I want Java to use US locale by default as everywhere in my code where I actually need localisation I will make it explicit in my code. Just my habits perhaps but it is very annoying when printf/format uses my local Locale cause the...