Java - Check if JTextField is empty or not

Question

So I got know this is a popular question and already found the solution. But when I try this it doesn\'t work properly.

My JTextField is empty and the button isn\'t

Answer 1

you can use isEmpty() or isBlank() methods regarding what you need.

---

Returns true if, and only if, length() is 0.

this.name.getText().isEmpty();

---

Returns true if the string is empty or contains only white space codepoints, otherwise false

this.name.getText().isBlank();

Answer 2

The following will return true if the JTextField "name" does not contain text:

name.getText().isEmpty

Answer 3

use the following code :

if(name.getText().equals(""))
{
loginbt.disable();
}

Answer 4

To Check JTextFiled is empty or not condition:

if( (billnotf.getText().length()==0)||(billtabtf.getText().length()==0))

Answer 5

Try this

if(name.getText() != null && name.getText().equals(""))
{
        loginbt.setEnabled(false);
}
else
{
        loginbt.setEnabled(true);
}

Answer 6

private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {                                         
    // Submit Button        

    String Fname = jTextField1.getText();
    String Lname = jTextField2.getText();
    String Desig = jTextField3.getText();
    String Nic = jTextField4.getText();
    String Phone = jTextField5.getText();
    String Add = jTextArea1.getText();
    String Dob = jTextField6.getText();
    // String Gender;
    // Image

    if (Fname.hashCode() == 0 || Lname.hashCode() == 0 || Desig.hashCode() == 0 || Nic.hashCode() == 0 || Phone.hashCode() == 0 || Add.hashCode() == 0)
    {
        JOptionPane.showMessageDialog(null, "Some fields are empty!");
    }
    else
    {
        JOptionPane.showMessageDialog(null, "OK");
    }
}