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What is the best way to implement constants in Java? [closed]

...ublic static final Point ORIGIN = new Point(0,0); public static void main(String[] args){ ORIGIN.x = 3; } That is legal and ORIGIN would then be a point at (3, 0). share ...
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How to create an infinite loop in Windows batch file?

... And from cmd prompt? – theonlygusti Mar 13 '15 at 16:11 13 ...
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Test if characters are in a string

I'm trying to determine if a string is a subset of another string. For example: 9 Answers ...
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What is a vertical tab?

..., fill in header, VT to body area, fill in lines, VT to form footer. Generally it was coded in the program as a character constant. From the keyboard, it would be CTRL-K. I don't believe anyone would have a reason to use it any more. Most forms are generated in a printer control language like po...
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PostgreSQL error 'Could not connect to server: No such file or directory'

...n your postgres directory, probably /usr/local/var/postgres/ remove this and start server. Check - https://github.com/mperham/lunchy is a great wrapper for launchctl. share | improve this answer ...
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What is the difference between exit(0) and exit(1) in C?

...ccessful program termination & it is fully portable, While exit(1) (usually) indicates unsucessful termination. However, it's usage is non-portable. Note that the C standard defines EXIT_SUCCESS and EXIT_FAILURE to return termination status from a C program. 0 and EXIT_SUCCESS are the values s...
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Implementation difference between Aggregation and Composition in Java

... professors = null; } } public class Professor { private String name; private List<Department> attachedDepartments; public void destroy(){ } public void fire(Department d){ attachedDepartments.remove(d); } } Something around this. EDIT: a...
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Knight's Shortest Path on Chessboard

... You have a graph here, where all available moves are connected (value=1), and unavailable moves are disconnected (value=0), the sparse matrix would be like: (a1,b3)=1, (a1,c2)=1, ..... And the shortest path of two points in a graph can be found usin...
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if checkbox is checked, do this

...me power of jQuery to access properties of an element. The article specifically treats the use of .attr("id") but in the case that #checkbox is an <input type="checkbox" /> element the issue is the same for $(...).attr('checked') (or even $(...).is(':checked')) vs. this.checked. ...
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Difference between single quotes and double quotes in Javascript [duplicate]

...double quotes and single quotes is the interpretation of variable inside a string and the treatment of escape characters. 6...