String url = "jdbc:mysql://127.0.0.1:3306/mydatabase";
String user = "root";
String passwd = ".........";
String unicode= "?useUnicode=yes&characterEncoding=UTF-8";

setConnection((Connection) DriverManager.getConnection(url+unicode, user, passwd));

query3 = "INSERT INTO keyword (idkeyword, keyword) VALUES ("+keyWord.getId()+",'عماد')";
Statement state7 = (Statement) connection.createStatement();
state7.executeUpdate(query3);

java.sql.SQLException: Incorrect string value: 'xD8xB9xD9x85xD8xA7...' for column 'keyword' at row 1
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:965)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3976)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3912)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2530)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2683)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2482)
at com.mysql.jdbc.StatementImpl.executeUpdateInternal(StatementImpl.java:1552)
at com.mysql.jdbc.StatementImpl.executeLargeUpdate(StatementImpl.java:2607)
at com.mysql.jdbc.StatementImpl.executeUpdate(StatementImpl.java:1480)
at controller.DataBaseAccess.saveProject(DataBaseAccess.java:285)