How to Convert Decimal to Binary Number in Java

Firstly, we have to draw control as Capture and set Variable for this control:

1/. Create a function name ReturnString:

    String ReturnString(String st)

    {

        String s="";

        char[] ch=st.toCharArray();

        for(int i=ch.length-1;i>=0;i--)

            s+=ch[i];

        return s;

    }

2/. In button Convert Number:

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

        // TODO add your handling code here:

        long value;

        value=Long.valueOf(txtDecimail.getText());

        String st="";

        do

        {

            st+=value%2;

            value/=2;

        }while(value>0);

        txtBinary.setText(ReturnString(st));

    }