private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                        

       int id = Integer.parseInt(txtid.getText());
    String lastname = txtlname.getText();
    String firstname = txtfname.getText();
    String middlename = txtmname.getText();
   int age = Integer.parseInt(txtage.getText());
    String sssNo = txtsss.getText();
    String tin = txttin.getText();
    String civilStatus =(String) combostatus.getSelectedItem();
    String address = txtareaadd.getText();
   
   EmployeeClass emp = new EmployeeClass( id, lastname , firstname, middlename,age, sssNo, tin,civilStatus, address);
  
  
   Display d = new Display(emp);
   d.setVisible(true);
          txtlname.setText("");
       txtfname.setText("");
       txtmname.setText("");
       txtsss.setText("");
       txttin.setText("");
       txtage.setText("");
       txtareaadd.setText("");
       txtid.setText("");

}

Employee Information

public class Display extends javax.swing.JFrame {
   
    /** Creates new form Display */
    public Display(EmployeeClass emp){

       
        initComponents();
       
        displname.setText(emp.getLastname());
        dispID.setText(Integer.valueOf(emp.getId()).toString());
        dispfname.setText(emp.getFirstname());
        dispmname.setText(emp.getMiddlename());
        dispadd.setText(emp.getAddress());
        dispSSS.setText(emp.getSssNo());
        disptin.setText(emp.getTin());
        dispage.setText(Integer.valueOf(emp.getAge()).toString());
        displname.setText(emp.getAddress());
        dispcs.setText(emp.getCivilStatus());
       
       
    }