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What version of javac built my jar?
How can I tell what version of the Java compiler was used to build a jar? I have a jar file, and it could have been built in any one of three JDKs. We need to know exactly which one, so we can certify compatibility. Is the compiler version embedded somewhere in the class files or jar?
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[精华] VC中BSTR、Char和CString类型的转换 - C/C++ - 清泛网 - 专注C/C++及内核技术
...scpy)的第二个参数是 const wchar_t* (Unicode)或const char* (ANSI)，系统编译器将会自动对其进行转换。
方法三，使用CString::GetBuffer。例如：
CString s(_T("This is a test "));
LPTSTR p = s.GetBuffer();
// 在这里添加使用p的代码
if(p != NULL) *p = _T('...
Bad class file magic or version
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my JAVA_HOME variable changed to Java 1.8 and I got this error message when compiling a pure java module as a dependency of my android project.
build.gradle of the java module
apply plugin: 'java'
Solution #1: Quick an dirty...
How to set time zone of a java.util.Date?
I have parsed a java.util.Date from a String but it is setting the local time zone as the time zone of the date object.
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javax vs java package
What's the rationale behind the javax package? What goes into java and what into javax?
7 Answers
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How to subtract X day from a Date object in Java?
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Java 8 and later
With Java 8's date time API change, Use LocalDate
LocalDate date = LocalDate.now().minusDays(300);
Similarly you can have
LocalDate date = someLocalDateInstance.minusDays(300);
Refer to https://stackov...
Comparing strings with == which are declared final in Java
I have a simple question about strings in Java. The following segment of simple code just concatenates two strings and then compares them with == .
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How does the Java 'for each' loop work?
...uses an int index counter and checks against array.length instead. See the Java Language Specification.
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Turning a string into a Uri in Android
...he doc http://developer.android.com/reference/android/net/Uri.html#parse%28java.lang.String%29
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SQlite Getting nearest locations (with latitude and longitude)
...pproximation and decrease amount of data that you need to evaluate in your java code. Use the following procedure for this purpose:
To have a deterministic threshold and more accurate filter on data, It is better to calculate 4 locations that are in radius meter of the north, west, east and south o...