MilkBar Inventory Management System using Java

This tutorial will teach you how to make a MilkBar Inventory Management System using Java step by step. This system will helpful you to learn Inventory Management System.

Paste the Code inside the Add Button

double sum = 0;
        if(chkst.isSelected())
        {
            String item = "strawberry";
            
             double qty;
             double cal;
             double price;

        qty = Double.parseDouble(txtSt.getText());
        if(CboSt.getSelectedItem().equals("L"))
        {  
            price = 200;
          cal = price * qty;  
        }
        else if(CboSt.getSelectedItem().equals("ML"))
        {
            price = 200;
            cal = price * qty/1000; 
        }
        else
        {
              price = 50;
            cal = price * qty;
        }
            model = (DefaultTableModel)jTable1.getModel();
            
            model.addRow(new Object[]          
            {
                item,
                qty,
                price,
                cal 
            }        
             );    
        }
        if(chkcho.isSelected())
        {
            String item = "Cho";
            
             double qty;
             double cal;
             double price;

        qty = Double.parseDouble(txtCho.getText());
        if(CboSt.getSelectedItem().equals("L"))
        {  
            price = 100;
          cal = price * qty;  
        }
        else if(CboSt.getSelectedItem().equals("ML"))
        {
            price = 100;
            cal = price * qty/1000; 
        }
        else
        {
              price = 40;
            cal = price * qty;
        }
            model = (DefaultTableModel)jTable1.getModel();
            
            model.addRow(new Object[]          
            {
                item,
                qty,
                price,
                cal 
            }        
             );    
        }
        
          if(chkven.isSelected())
        {
            String item = "Venila";
            
             double qty;
             double cal;
             double price;

        qty = Double.parseDouble(txtVal.getText());
        if(CboSt.getSelectedItem().equals("L"))
        {  
            price = 80;
          cal = price * qty;  
        }
        else if(CboSt.getSelectedItem().equals("ML"))
        {
            price = 80;
            cal = price * qty/1000; 
        }
        else
        {
              price = 30;
            cal = price * qty;
        }
            model = (DefaultTableModel)jTable1.getModel();
            
            model.addRow(new Object[]          
            {
                item,
                qty,
                price,
                cal 
            }        
             );    
        }
        
        
          for(int i=0; i<jTable1.getRowCount(); i++)
        {
            sum = sum + Double.parseDouble(jTable1.getValueAt(i, 3).toString());  
        }   
        txtTot.setText(Double.toString(sum));