?? conndata.java
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package wuliu;import java.sql.*;public class conndata {Connection conn=null;ResultSet rs=null; Statement st=null; boolean n=false; public conndata() { try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); }catch(Exception e) {e.printStackTrace();} } public ResultSet executeQuery(String sql) { try { conn=DriverManager.getConnection("jdbc:odbc:dbsource","sa",""); st=conn.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_READ_ONLY); rs=st.executeQuery(sql); }catch(SQLException e) { e.printStackTrace(); System.out.println("Query Exception"); }return rs; } public boolean executeUpdata(String sql) { try { conn=DriverManager.getConnection("jdbc:odbc:dbsource","sa",""); st=conn.createStatement(); int m=st.executeUpdate(sql); n=true; }catch(Exception e) { n=false; e.printStackTrace(); System.out.print("Updata Exception"); } return n; } public boolean executeInsert(String sql) { try { conn=DriverManager.getConnection("jdbc:odbc:dbsource","sa",""); st=conn.createStatement(); st.executeUpdate(sql); n=true; }catch(Exception ex) { n=false; ex.printStackTrace(); System.out.println("Insert Exception"); }return n; } public boolean executeDelete(String sql) { try { conn=DriverManager.getConnection("jdbc:odbc:dbsource","sa",""); st=conn.createStatement(); st.executeUpdate(sql); n=true; } catch(Exception e) { n=false; e.printStackTrace(); System.out.println("Delete exception"); } return n; } public void closeConn() { try { conn.close(); }catch(Exception e) {e.printStackTrace();} } public void closeStatement() { try { st.close(); }catch(Exception e) {e.printStackTrace();} }}?? 快捷鍵說明
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