java.lang.NumberFormatException: For input string: "."
	at jdk.internal.math.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:2054)
	at jdk.internal.math.FloatingDecimal.parseDouble(FloatingDecimal.java:110)
	at java.lang.Double.parseDouble(Double.java:662)
	at com.entitcs.office_attendance.sales.Sales_Product_Master$4.onTextChanged(Sales_Product_Master.java:338)
	at android.widget.TextView.sendOnTextChanged(TextView.java:12871)
	at android.widget.TextView.handleTextChanged(TextView.java:12986)
	at android.widget.TextView$ChangeWatcher.onTextChanged(TextView.java:16503)
	at android.text.SpannableStringBuilder.sendTextChanged(SpannableStringBuilder.java:1268)
	at android.text.SpannableStringBuilder.replace(SpannableStringBuilder.java:577)
	at android.text.SpannableStringBuilder.delete(SpannableStringBuilder.java:231)
	at android.text.SpannableStringBuilder.delete(SpannableStringBuilder.java:38)
	at android.text.method.BaseKeyListener.backspaceOrForwardDelete(BaseKeyListener.java:372)
	at android.text.method.BaseKeyListener.backspace(BaseKeyListener.java:71)
	at android.text.method.BaseKeyListener.onKeyDown(BaseKeyListener.java:498)
	at android.text.method.NumberKeyListener.onKeyDown(NumberKeyListener.java:146)
	at android.widget.TextView.doKeyDown(TextView.java:9909)
	at android.widget.TextView.onKeyDown(TextView.java:9664)
	at android.view.KeyEvent.dispatch(KeyEvent.java:3041)
	at android.view.View.dispatchKeyEvent(View.java:16497)
	at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1999)
	at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1999)
	at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1999)
	at android.widget.ScrollView.dispatchKeyEvent(ScrollView.java:517)
	at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1999)
	at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1999)
	at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1999)
	at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1999)
	at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1999)
	at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1999)
	at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1999)
	at android.view.ViewGroup.dispatchKeyEvent(ViewGroup.java:1999)
	at com.android.internal.policy.DecorView.superDispatchKeyEvent(DecorView.java:529)
	at com.android.internal.policy.PhoneWindow.superDispatchKeyEvent(PhoneWindow.java:1991)
	at android.app.Activity.dispatchKeyEvent(Activity.java:4601)
	at androidx.core.app.ComponentActivity.superDispatchKeyEvent(ComponentActivity.java:122)
	at androidx.core.view.KeyEventDispatcher.dispatchKeyEvent(KeyEventDispatcher.java:84)
	at androidx.core.app.ComponentActivity.dispatchKeyEvent(ComponentActivity.java:140)
	at androidx.appcompat.app.AppCompatActivity.dispatchKeyEvent(AppCompatActivity.java:599)
	at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
	at androidx.appcompat.app.AppCompatDelegateImpl$AppCompatWindowCallback.dispatchKeyEvent(AppCompatDelegateImpl.java:3068)
	at androidx.appcompat.view.WindowCallbackWrapper.dispatchKeyEvent(WindowCallbackWrapper.java:59)
	at com.android.internal.policy.DecorView.dispatchKeyEvent(DecorView.java:401)
	at android.view.ViewRootImpl$ViewPostImeInputStage.processKeyEvent(ViewRootImpl.java:8752)
	at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:8587)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:7978)
	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:8040)
	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:8001)
	at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:8172)
	at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:8009)
	at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:8229)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:7982)
	at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:8040)
	at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:8001)
	at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:8009)
	at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:7982)
	at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:11403)
	at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:11350)
	at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:11305)
	at android.view.ViewRootImpl$ViewRootHandler.handleMessageImpl(ViewRootImpl.java:7671)
	at android.view.ViewRootImpl$ViewRootHandler.handleMessage(ViewRootImpl.java:7536)
	at android.os.Handler.dispatchMessage(Handler.java:107)
	at android.os.Looper.loopOnce(Looper.java:282)
	at android.os.Looper.loop(Looper.java:387)
	at android.app.ActivityThread.main(ActivityThread.java:9501)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:600)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1005)