Change if (str ==“”) to if (str.isEmpty())Don’t use == to compare strings. The empty string from the text field is a different entity than the constant pool empty string. You are doing an identity comparison. ScottOn Aug 3, 2024, at 10:17 PM, Pieter van den Hombergh wrote:an empty string is neve
an empty string is never a valid number. for a valid number you need at
least one digit inside the string.
met vriendelijke groet
Pieter van den Hombergh
Op za 3 aug 2024, 20:58 schreef Zulfi Khan :
> Hi,
>
> I have written the following function:
>
>
> private boolean jDelBtnActionPerformed(java
Hi,
I have written thefollowing function:
private booleanjDelBtnActionPerformed(java.awt.event.ActionEvent evt) {
// TODO addyour handling code here:
JOptionPane.showMessageDialog(null, "Inside Delete Btn");
String str ="";
try{
str =jTF1.getText().trim();
}catch(java.lang.NumberFo
