Insert values in existing record. sqlite using prepared statement - mysql

Question

I want to insert values into an existing record using prepared statment. The value of that record is the last record inserted, I tried LAST function and MAX but it didn't seems to work, also I tried SELECT statment inside INSERT with no luck.
public static void insertCoordinates(){
java.sql.Connection c = null;
try {
String str1 = Singelton.getInstance().getTxtField1().getText();
Class.forName("org.sqlite.JDBC");
c = DriverManager.getConnection("jdbc:sqlite:timeline_DB.db");
c.setAutoCommit(false);
PreparedStatement preparedStatement = c.prepareStatement("insert into event_table(bar_length, x_bar, y_bar) values (?, ?, ?) WHERE event_title =?");
preparedStatement.setInt(1, CanvasNewTimeLine.Event_length);
preparedStatement.setInt(2, CanvasNewTimeLine.x);
preparedStatement.setInt(3, CanvasNewTimeLine.H_LINE);
preparedStatement.setString(4,str1);
preparedStatement.executeUpdate();
c.commit();
c.close();
} catch ( Exception e ) {
System.err.println( e.getClass().getName() + ": " + e.getMessage() );
System.exit(0);
System.err.println("problem");
}
System.out.println("yesssssss successfully");
}

Answer 1

I used update instead of insert:
public static void insertCoordinates(){
java.sql.Connection c = null;
try {
String str1 = Singelton.getInstance().getTxtField1().getText();
Class.forName("org.sqlite.JDBC");
c = DriverManager.getConnection("jdbc:sqlite:timeline_DB.db");
c.setAutoCommit(false);
String updateTableSQL = "UPDATE event_table SET bar_length = ?, x_bar=?, y_bar=? WHERE event_title = ?";
PreparedStatement preparedStatement = c.prepareStatement(updateTableSQL);
preparedStatement.setInt(1, CanvasNewTimeLine.Event_length);
preparedStatement.setInt(2, CanvasNewTimeLine.x);
preparedStatement.setInt(3, CanvasNewTimeLine.H_LINE);
preparedStatement.setString(4,str1);
// execute
preparedStatement .executeUpdate();
c.commit();
c.close();
} catch ( Exception e ) {
System.err.println( e.getClass().getName() + ": " + e.getMessage() );
System.exit(0);
System.err.println("problem");
}
System.out.println("yesssssss successfully");
}