feat(postgres_java): add class LctMsgCreateTable.java

postgres_java/src/main/java/de/swingbe/postgres_java/LctMsgCreateTable.java

@@ -0,0 +1,61 @@
+package de.swingbe.postgres_java;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+import java.sql.Statement;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+public class LctMsgCreateTable {
+
+    public static void main(String[] args) {
+
+        //connection URL for the postgres database
+        //jdbc:postgresql://<host>:<port>/<database name>
+        String url = "jdbc:postgresql://localhost:5432/testdb";
+
+        String user = "usr";
+        String password = "#password";
+
+        try (Connection con = DriverManager.getConnection(url, user, password)) {
+
+            try (Statement st = con.createStatement()) {
+
+                //autocommit should always be turned off when doing batch updates
+                con.setAutoCommit(false);
+
+                //type: 0:echt,1:frei,2:wird benoetigt,3:virtuell
+                //create a new table called friends and insert five rows into it
+                st.addBatch("DROP TABLE IF EXISTS lct_msg_x");
+                st.addBatch("CREATE TABLE lct_msg_x(" + "bs_id bigserial PRIMARY KEY NOT NULL" + ",vc_trip VARCHAR(20) NOT NULL" + ",vc_route VARCHAR(20)" + ",vc_tenant VARCHAR(20)" + ",vc_date VARCHAR(20) NOT NULL" + ",vc_time VARCHAR(20) NOT NULL" + ",vc_lat VARCHAR(20) NOT NULL" + ",vc_lng VARCHAR(20) NOT NULL" + ")");
+
+                //method returns an array of committed changes
+                int[] counts = st.executeBatch();
+
+                con.commit();
+
+                System.out.println("Committed " + counts.length + " updates");
+
+            } catch (SQLException ex) {
+
+                if (con != null) {
+                    try {
+                        con.rollback();
+                    } catch (SQLException ex1) {
+                        Logger lgr = Logger.getLogger(LctMsgCreateTable.class.getName());
+                        lgr.log(Level.WARNING, ex1.getMessage(), ex1);
+                    }
+                }
+
+                Logger lgr = Logger.getLogger(LctMsgCreateTable.class.getName());
+                lgr.log(Level.SEVERE, ex.getMessage(), ex);
+            }
+
+        } catch (SQLException ex) {
+
+            Logger lgr = Logger.getLogger(LctMsgCreateTable.class.getName());
+            lgr.log(Level.SEVERE, ex.getMessage(), ex);
+        }
+    }
+}