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Difference between string object and string literal [duplicate]
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When you use a string literal the string can be interned, but when you use new String("...") you get a new string object.
In this example both string literals refer the same object:
String a = "abc";
String b = "abc";
System.out.println(a == b);...
CSS force image resize and keep aspect ratio
I am working with images, and I ran across a problem with aspect ratios.
23 Answers
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Unable to simultaneously satisfy constraints, will attempt to recover by breaking constraint
Below is the error message I receive in the debug area. It runs fine and nothing is wrong except that I receive this error. Would this prevent apple accepting the app? How do I fix it?
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What causes “Unable to access jarfile” error?
I want to execute my program without using an IDE.
I've created a jar file and an exectuable jar file. When
I double click the exe jar file, nothing happens, and when I try to use the command in cmd it gives me this:
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How to call a method after bean initialization is complete?
...static) method in the bean only-once at the ApplicationContext load up. Is it ok, if I use MethodInvokingFactoryBean for this? Or we have a some better solution?
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Run a batch file with Windows task scheduler
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I faced the same problem, but I found another solution without having to modify my batch script.
The only thing that I missed out is at the 'Action' settings - "Start in (Optional)" option.
Go the task properties --> Action tab --> Edit --> Fill up as below:
Action: S...
How to size an Android view based on its parent's dimensions
How can I size a view based on the size of its parent layout. For example I have a RelativeLayout that fills the full screen, and I want a child view, say an ImageView , to take up the whole height, and 1/2 the width?
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Create an Android Jar library for distribution
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If you create a Android Library project without having any resources, the ADT (first noticed in r16) will create a .jar with the same name as the project in the 'bin' folder.
share
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Force update of an Android app when a new version is available
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I agree with Scott Helme's point in another answer here. But in some extreme situations (security issues, API breaking changes...) where you absolutely need the users to update to continue using the app, you could provide a simple ver...
Create an array with same element repeated multiple times
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You can do it like this:
function fillArray(value, len) {
if (len == 0) return [];
var a = [value];
while (a.length * 2 <= len) a = a.concat(a);
if (a.length < len) a = a.concat(a.slice(0, len - a.length));
return a;
}
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