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Sqlite primary key on multiple columns
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@Pastafarianist sqlite.org/lang_createtable.html - "According to the SQL standard, PRIMARY KEY should always imply NOT NULL. Unfortunately, due to a bug in some early versions, this is not the case in SQLite. [...] NULL values are considered distinct f...
How do I run only specific tests in Rspec?
...swered Feb 21 '11 at 18:25
Alex LangAlex Lang
1,2601111 silver badges1313 bronze badges
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Does .asSet(…) exist in any API?
...a", "b");
myList.add("c");
}
Returns:
Exception in thread "main" java.lang.UnsupportedOperationException
at java.util.AbstractList.add(Unknown Source)
at java.util.AbstractList.add(Unknown Source)
There is no JDK implementation of a "fixed-size" Set inside the Arrays class. Why do you...
Does Java have a using statement?
...sembling using.
As an example, you can use any variable implementing java.lang.AutoCloseable in the following way:
try(ClassImplementingAutoCloseable obj = new ClassImplementingAutoCloseable())
{
...
}
Java's java.io.Closeable interface, implemented by streams, automagically extends AutoClos...
UTF-8 byte[] to String
... And if checkstyle says: "Illegal Instantiation: Instantiation of java.lang.String should be avoided.", then what?
– Attila Neparáczki
Oct 29 '14 at 8:58
1
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Android中Java和JavaScript交互 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...read
过滤日志曾发现过这个问题。
E/StrictMode( 1546): java.lang.Throwable: A WebView method was called on thread 'JavaBridge'. All WebView methods must be called on the same thread. (Expected Looper Looper (main, tid 1) {528712d4} called on Looper (JavaBridge, tid 121) {52b6678c}, FY...
How to view AndroidManifest.xml from APK file?
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I get error: Exception in thread "main" java.lang.IllegalStateException: The tools directory property is not set, please make sure you are executing apkanalyzer, I didn't know how to solve it
– jk2K
Jun 1 at 9:48
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Naming threads and thread-pools of ExecutorService
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The BasicThreadFactory from apache commons-lang is also useful to provide the naming behavior. Instead of writing an anonymous inner class, you can use the Builder to name the threads as you want. Here's the example from the javadocs:
// Create a factory that produc...
How to convert a String into an ArrayList?
...acle.com/javase/8/docs/api/java/util/regex/Pattern.html#splitAsStream-java.lang.CharSequence-. Since you don't need the array at all, avoid creating it thus:
// This will presumably be a static final field somewhere.
Pattern splitter = Pattern.compile("\\s+");
// ...
String untokenized = reader.re...
How to check String in response body with mockMvc
...ase try with different username\""));
Of course my assertion fail:
java.lang.AssertionError: Response content expected:
<"Username already taken - please try with different username"> but was:<"Something gone wrong">
because:
MockHttpServletResponse:
Body = "Something...