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How to return multiple values? [duplicate]
Is it possible to return two or more values from a method to main in Java? If so, how it is possible and if not how can we do?
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Regexp Java for password validation
I'm creating a regexp for password validation to be used in a Java application as a configuration parameter.
15 Answers
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Long list of if statements in Java
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Instead of a HashMap you can use a Java enum, which gives you a well defined set of commands instead of a mushy map. You could have a getter in the enum: Command getCommand(); or even implement exec() as an abstract method in the enum, which each instance impl...
Why aren't Java Collections remove methods generic?
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Josh Bloch and Bill Pugh refer to this issue in Java Puzzlers IV: The
Phantom Reference Menace, Attack of the Clone, and Revenge of The
Shift.
Josh Bloch says (6:41) that they attempted to generify the get method
of Map, remove method and some other, but "it simply did...
What is the default scope of a method in Java?
...e permissive than private scope.
More information:
http://docs.oracle.com/javase/tutorial/java/javaOO/accesscontrol.html
http://mindprod.com/jgloss/scope.html
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Find TODO tags in Eclipse
When I used Eclipse to add unimplemented methods to a Java class to fix an error, methods were auto-generated and include // TODO Auto-generated method stub
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@UniqueConstraint annotation in Java
I have a Java bean. Now, I want to be sure that the field should be unique.
8 Answers
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Groovy Shell warning “Could not open/create prefs root node …”
...egedit into the search field.
Navigate to path HKEY_LOCAL_MACHINE\Software\JavaSoft (Windows 10 seems to now have this here: HKEY_LOCAL_MACHINE\Software\WOW6432Node\JavaSoft)
Right click on the JavaSoft folder and click on New -> Key
Name the new Key Prefs and everything should work.
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Java 8: How do I work with exception throwing methods in streams?
... It's sad we have to do this instead of using our native exceptions.... oh Java, it gives and then takes away
– Erich
Feb 27 '15 at 21:29
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What's with 181783497276652981 and 8682522807148012 in Random (Java 7)?
Why were 181783497276652981 and 8682522807148012 chosen in Random.java ?
3 Answers
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