자바13 [Java] 워드파일(doc) PDF 변환 import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.OutputStream; import org.apache.poi.hwpf.HWPFDocument; import org.apache.poi.hwpf.extractor.WordExtractor; import org.apache.poi.hwpf.usermodel.Paragraph; import org.apache.poi.hwpf.usermodel.Range; import org.apache.poi.poifs.filesystem.POIFSFileSystem; import com.lowagie.text.Document; import c.. 2021. 12. 31. [Java] zip파일 내부 목록확인 import java.io.File; import java.io.FileInputStream; import java.nio.charset.Charset; import java.util.zip.ZipEntry; import java.util.zip.ZipInputStream; public class ZIP_LIST { // 압축파일 목록확인 // 참조 - https://minaminaworld.tistory.com/132 public static void main(String[] args) { ZipInputStream zipinputstream = null; FileInputStream fileinputstream = null; ZipEntry zipentry = null; File file = new .. 2021. 12. 31. [Java]JDBC DELETE하기 import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class Jdbc_delete { private static Connection conn; private static Statement stmt; private static PreparedStatement pstmt; private static ResultSet rs; // 자원반납용 private static void disConnect() { if(rs != null) { try { rs.close(); } catch (SQLE.. 2021. 10. 30. [Java]JDBC UPDATE하기 import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class Jdbc_update { private static Connection conn; private static Statement stmt; private static PreparedStatement pstmt; private static ResultSet rs; // 자원반납용 private static void disConnect() { if(rs != null) { try { rs.close(); } catch (SQLE.. 2021. 10. 30. [Java] JDBC INSERT하기 import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Statement; public class Jdbc_insert { private static Connection conn; private static Statement stmt; private static PreparedStatement pstmt; private static ResultSet rs; // 자원반납용 private static void disConnect() { if(rs != null) { try { rs.close(); } catch (SQLE.. 2021. 10. 30. [Java] JDBC로 오라클 연결 import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; //JDBC DB연결 메소드 public class DButil { static { try { Class.forName("oracle.jdbc.driver.OracleDriver"); } catch (ClassNotFoundException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static Connection getconnection() { try { //순서 - 데이터베이스 연결주소, 데이터베이스 이름 // 오라클 아이디 // 오라클 비밀번호 return .. 2021. 10. 27. 이전 1 2 3 다음
