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The simplest way to comma-delimit a list?
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Java 8 and later
Using StringJoiner class :
StringJoiner joiner = new StringJoiner(",");
for (Item item : list) {
joiner.add(item.toString());
}
return joiner.toString();
Using Stream, and Collectors:
return list.stream().
map(Object...
Generic type parameter naming convention for Java (with multiple chars)?
...rfaces I wrote I'd like to name generic type parameters with more than one character to make the code more readable.
5 Answ...
How to check if AlarmManager already has an alarm set?
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Does it have to use the Intent with just an Action String? I tried specifying a class, new Intent(context, MyClass.class) but it doesn't seem to work. It always returns null even when the alarm is running.
– toc777
Apr 4 '12 at 8:39
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Run Command Prompt Commands
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this is all you have to do run shell commands from C#
string strCmdText;
strCmdText= "/C copy /b Image1.jpg + Archive.rar Image2.jpg";
System.Diagnostics.Process.Start("CMD.exe",strCmdText);
EDIT:
This is to hide the cmd window.
System.Diagnostics.Process process = new Syste...
Best way to convert an ArrayList to a string
I have an ArrayList that I want to output completely as a String. Essentially I want to output it in order using the toString of each element separated by tabs. Is there any fast way to do this? You could loop through it (or remove each element) and concatenate it to a String but I think this wi...
Decimal number regular expression, where digit after decimal is optional
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@Chandranshu and it matches an empty string, which your change would also solve.
– OGHaza
Nov 22 '13 at 14:29
2
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Replacing all non-alphanumeric characters with empty strings
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the reg exp is ok, just remove "/" from the regexp string from value.replaceAll("/[^A-Za-z0-9 ]/", ""); to value.replaceAll("[^A-Za-z0-9 ]", ""); you don't need the "/" inside the regexp, I think you've confused with javascript patterns
– eriknyk
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Truncate a string straight JavaScript
I'd like to truncate a dynamically loaded string using straight JavaScript. It's a url, so there are no spaces, and I obviously don't care about word boundaries, just characters.
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Searching if value exists in a list of objects using Linq
...case insensitive search: cus => cus.FirstName.Equals("John", StringComparison.CurrentCultureIgnoreCase)
– jmservera
Jul 1 '09 at 20:40
1
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Operator overloading in Java
...hich comes close to "custom" operator overloading is the handling of + for strings, which either results in compile-time concatenation of constants or execution-time concatenation using StringBuilder/StringBuffer. You can't define your own operators which act in the same way though.
For a Java-like...