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• [JSP & Servlet] - HttpServletRequest, HttpServletResponse

  Java/Java EE 2016. 5. 25. 08:56

  HttpServletRequest 크로스도메인 모든도메인 허용(*) response.addHeader("Access-Control-Allow-Origin", "*"); HttpServletResponse

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• [Samples] - PropertiesFileWriter

  Java/Samples 2016. 5. 24. 11:33

  import java.io.BufferedWriter; import java.io.File; import java.io.FileWriter; import java.io.IOException; import java.io.Writer; import java.util.Map.Entry; import java.util.Properties; public class PropertiesFileWriter extends BufferedWriter { private static final String EXTENSION = "properties"; private static final String COMMENT_HEADER = "#"; private PropertiesFileWriter(Writer out) throws ..

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• [Tools] - Eclipse java.lang.UnsupportedClassVersionError: Bad version number in .class file

  Java/Tools, Library, Plugin 2016. 5. 11. 08:20

  Show View / Problems Error / Java compiler level does not match the version of the installed Java project facet. Run As / Show View / Console Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file 뜨면서 실행이 안되는 현상이 발생하였다 Java Compiler / Java Build Path 둘다 다 맞춰줬음에도 불구하고 해결 조치방법은 아래와 같이 해당 프로젝트 Properties Project Facets / Configuration / Custom Java Vers..

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• [AWT / Swing] - Font.createFont()

  Java/Java SE 2016. 3. 23. 13:57

  Font.createFont 메소드는 아래와 같이 두 가지의 방식으로 오버로딩 되어있다. 가급적이면 두 번쨰 방법으로 사용하는것을 추천한다. public static Font createFont(int fontFormat, InputStream fontStream) throws java.awt.FontFormatException, java.io.IOException public static Font createFont(int fontFormat, File fontFile) throws java.awt.FontFormatException, java.io.IOException InputStream System.getProperty("java.io.tmpdir") 경로에 폰트 템프파일들이 생성 생성된 템프파일..

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• [Algorithm] - 오름차순(Ascending), 내림차순(Descending) 정렬

  Data Structure, Algorithm 2016. 3. 8. 22:58

  #include #pragma warning(disable:4715) typedef enum _SORT_COMPARE_TYPE { ASCENDING, DESCEDING } SORT_COMPARE_TYPE; typedef int(*pfnSortCompare)(int [], int, int); pfnSortCompare GetFuncSortCompareByType(SORT_COMPARE_TYPE compareType); int Ascending(int arr[], int x, int y); int Descending(int arr[], int x, int y); void Swap(int arr[], int x, int y); void Sort(int arr[], int nCount, pfnSortCompar..

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• [Reflection] - 동적 클래스 생성

  Java/Java SE 2016. 3. 7. 13:49

  Class clazz = Class.forName("className"); Object o = clazz.newInstance();

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• [JSP & Servlet] - Deployment Descriptor

  Java/Java EE 2016. 3. 6. 00:24

  Session Timeout 30 Context Param name value

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• [Algorithm] - 이진 탐색(Binary Search)

  Data Structure, Algorithm 2016. 3. 5. 12:51

  #include using std::cout; using std::endl; int BinarySearch(int arr[], int len, int target) { int first = 0; int last = len - 1; int mid; while (first

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