Updating a person's data.

Author: HeitorLouzeiro

demo/src/main/java/com/example/database/PersonDao.java

@@ -67,4 +67,14 @@ public Person getById(int id) throws SQLException{
 
         return null;
     }
+
+    public void update(Person person) throws SQLException{
+        Statement statement = connetion.createStatement();
+
+        /* UPDATE table SET column = value [, ...] [WHERE condition] */
+
+        statement.executeUpdate("update person set name = '" + person.getName() + "' where id = " + person.getId());
+
+        statement.close();
+    }
 }

demo/src/main/java/com/example/database/TestDB.java

@@ -33,6 +33,15 @@ public static void main(String[] args) throws IOException{
             // Delete data
             /* personDao.delete(2); */
 
+            Person person3 = new Person();
+
+            person3.setId(3);
+            person3.setName("Carlos");
+
+            personDao.update(person3);
+
+
+
             // Get all data
             List<Person> persons = personDao.getAll();
 
@@ -45,6 +54,8 @@ public static void main(String[] args) throws IOException{
 /*             Person person2 = personDao.getById(2);
             System.out.println(person2); */
 
+            
+
         } catch (SQLException e) {
             // if the error message is "out of memory",
             // it probably means no database file is found