Change the table name 'leave' as it contradicts. Then use the following code:

if(hour<=13) {
java.util.Date date=new java.util.Date();
            SimpleDateFormat sdf1=new SimpleDateFormat("yyyy-MM-dd");
            String d=sdf1.format(date);
            SimpleDateFormat sdf2=new SimpleDateFormat("hh:mm:ss");
            String t=sdf2.format(date);
           Class.forName("com.mysql.jdbc.Driver");
           Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/roseindia", "root", "root");
           Statement st=con.createStatement();

           PreparedStatement ps = con.prepareStatement("insert into leavetable(empid,username,datefield,ip_address,status,morning) values(?,?,?,?,?,?)");
           ps.setInt(1,1);
           ps.setString(2,"roseindia");
           ps.setString(3,d);
           ps.setString(4,"192.123.10.111");
           ps.setString(5,"L");
           ps.setString(6,t);
           ps.executeUpdate();
}