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What are "connecting characters" in Java identifiers?
(7 answers)
Closed 9 years ago.
I have some doubt ,i want to know that is int π; is a valid syntax in Java Or Not because Java support UNICODE so according to me it can be valid but I want to make sure
int π; is perfectly valid - as you say Java supports unicode so anything not reserved is fair game for identifiers.
Related
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Searching for a sequence of Bytes in a Binary File with Java
(5 answers)
Closed 5 years ago.
I come up an idea to read a byte[] array with the same size of the input, and check one by one. But it seems not very efficient. Is there a way to solve it by using rolling hash?
If you are using java 8 or above please check the
java.util.Optional<T>
The documentation is here
Optional
If I got what you mean correctly
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C# getting its own class name
(11 answers)
Closed 7 years ago.
I am trying to rewrite Java code to C# and I am facing the problem that C# has not got this Java method. Can you please give me the C#'s equivalent of this method or some other way to get the class name.
you can do it like this:
typeof(ClassName).Name
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Best way to Format a Double value to 2 Decimal places [duplicate]
(2 answers)
Closed 7 years ago.
The title says it all. Right now if I input a number like 100.50, in my program it prints as 100.5. Is there an easy way to make the program recognize the zero?
You can do this trick.
String s = String.format("%.2f", 100.50);
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Convert String to KeyEvents
(16 answers)
Closed 7 years ago.
I need a way to do what is described in the first answer to this question: Type a String using java.awt.Robot
Only I would like to avoid using the clipboard. Is there a generic way to do it without?
(Other answers to the question address printing some hard-coded keys, but they don't help me print "Hello, world!")
You can use javax.swing.KeyStroke to transform the characters in your string into keycodes. For each key code, call Robot.keyPress(...), Robot.keyRelease(...) as you are doing in your previous question
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Is there a good reason to use "printf" instead of "print" in java?
(4 answers)
Closed 8 years ago.
Just came to know that java does has a method named printf, then what is the difference between printf & println?
System.out.println(); is efficient for simply printing a line of text. If the line of text needs to be formatted (ex: alignment (left-justified, etc.), etc.), then System.out.printf(); would be used.
Check out this link for more information.