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@UniqueConstraint annotation in Java
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To ensure a field value is unique you can write
@Colu<em>mem>n(unique=true)
String userna<em>mem>e;
The @UniqueConstraint annotation is for annotating <em>mem>ultiple unique keys at the table level, which is why you get an error when applying it to a field.
References (JPA TopLink):
@UniqueCon...
How do I get the current GPS location progra<em>mem><em>mem>atically in Android?
I need to get <em>mem>y current location using GPS progra<em>mem><em>mem>atically.
How can i achieve it?
23 Answers
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How to convert / cast long to String?
I just created sa<em>mem>ple BB app, which can allow to choose the date.
8 Answers
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Rando<em>mem> data in Unit Tests?
I have a coworker who writes unit tests for objects which fill their fields with rando<em>mem> data. His reason is that it gives a wider range of testing, since it will test a lot of different values, whereas a nor<em>mem>al test only uses a single static value.
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Can so<em>mem>eone explain how to i<em>mem>ple<em>mem>ent the jQuery File Upload plugin?
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10 Answers
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Is there an <em>Mem>D5 Fixed Point where <em>mem>d5(x) == x?
Is there a fixed point in the <em>Mem>D5 transfor<em>mem>ation, i.e. does there exist x such that <em>mem>d5(x) == x ?
7 Answers
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How to add so<em>mem>e non-standard font to a website?
Is there a way to add so<em>mem>e custo<em>mem> font on a website without using i<em>mem>ages, Flash or so<em>mem>e other graphics?
18 Answers
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Co<em>mem>pare two files in Visual Studio
I saw new co<em>mem>parsion tool in VS 2012 for co<em>mem>paring two files or two versions of file. I like it. But when I tried to find it I can't because I don't use TFS. Is there a way how can I just co<em>mem>pare two files with builtin feature in VS but without TFS?
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Check if a file exists with wildcard in shell script [duplicate]
I'<em>mem> trying to check if a file exists, but with a wildcard. Here is <em>mem>y exa<em>mem>ple:
21 Answers
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In what order do static/instance initializer blocks in Java run?
Say a project contains several classes, each of which has a static initializer block. In what order do those blocks run? I know that within a class, such blocks are run in the order they appear in the code. I've read that it's the sa<em>mem>e across classes, but so<em>mem>e sa<em>mem>ple code I wrote disagrees with t...