unable to identify the table in specified database

String data = "%1:zetakalyam:arjun";
if (data.startsWith("%1")) {
String str = data;
String[] cmd;
String delimiter = "%|\\$|\\:|\\#";
cmd = str.split(delimiter);
System.out.println(cmd.length);
for (int i = 0; i < cmd.length;i++) {
System.out.println("cmd of " +i+ "=" +cmd[i]);
                   }
Connection con = null;
try{
 Class.forName("com.mysql.jdbc.Driver");
  String conURL = "jdbc:mysql://localhost/employee";
  con = DriverManager.getConnection(conURL, "root", "root");
  DatabaseMetaData dbm = con.getMetaData();
  ResultSet tables = dbm.getTables(null, null, "+cmd[2]+", null);
 if (tables.next()) { //if table exists
Statement st = con.createStatement();
String query = "insert into " + cmd[2] + " 
(name,employee_id,date,logout) select 
name,employee_id,curdate(),'0' from tbi where name = '" + cmd[3] + "'";
  ResultSet rs1 = st.executeQuery(query); 
                }
else{
                
 System.out.println("table does not exists");
              }
              }
catch(ClassNotFoundException | SQLException e){
                  
              }