Text value of button usage in condition

I'm trying to make condition where I wanto compare text value of button but it always doesn't match...

<Button android:layout_width="90dp" android:layout_height="40dp" android:gravity="center" android:text="+" android:id="@+id/baton1" android:layout_gravity="left|center_vertical" />

I've tried to print out the value and it shows like "[+]"...

if (btn.toString().equals("[+]")) {