BAEL-5058 : apache-derby added to dir (#11339)

* BAEL-5058 : apache-derby added to dir * BAEL-5058 : apache-derby fixed changes * BAEL-5058 : apache-derby parent pom fixed
2021-10-28 07:55:34 +03:30
parent b9fadd8f3d
commit 7ab19421e3
3 changed files with 72 additions and 0 deletions
@@ -0,0 +1,39 @@
+package com.baeldung.derby;
+
+import java.sql.*;
+
+/**
+ * Created by arash on 14.10.21.
+ */
+
+public class DerbyApplicationDemo {
+    public static void main(String[] args) {
+        runner("jdbc:derby:baeldung;create=true");
+    }
+
+    private static void runner(String urlConnection) {
+        try {
+            Connection con = DriverManager.getConnection(urlConnection);
+            Statement statement = con.createStatement();
+            if (!isTableExists("authors", con)) {
+                String createSQL = "CREATE TABLE authors (id INT PRIMARY KEY,first_name VARCHAR(255),last_name VARCHAR(255))";
+                statement.execute(createSQL);
+                String insertSQL = "INSERT INTO authors VALUES (1, 'arash','ariani')";
+                statement.execute(insertSQL);
+            }
+            String selectSQL = "SELECT * FROM authors";
+            ResultSet result = statement.executeQuery(selectSQL);
+            while (result.next()) {
+                // use result here
+            }
+        } catch (SQLException e) {
+            e.printStackTrace();
+        }
+    }
+
+    private static boolean isTableExists(String tableName, Connection connection) throws SQLException {
+        DatabaseMetaData meta = connection.getMetaData();
+        ResultSet result = meta.getTables(null, null, tableName.toUpperCase(), null);
+        return result.next();
+    }
+}