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  1. ,

    You try to parse a String that contains non-numeric characters to an int. The string must contain decimal characters only, optionally beginning with a + or - sign.

  2. ,

    Can occur when you try to convert a String to a numeric value but the String is not well formatted for the conversion.

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java.lang.NumberFormatException: null	at java.lang.Integer.parseInt(	at java.lang.Integer.parseInt(	at com.smj.webui.apps.form.WSimplifiedSales.(	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(	at java.lang.reflect.Constructor.newInstance(	at java.lang.Class.newInstance(	at org.smj.webui.factory.PosFormFactory.newFormInstance(	at org.adempiere.webui.Extensions.getForm(	at org.adempiere.webui.panel.ADForm.openForm(	at org.adempiere.webui.panel.ADForm.openForm(	at org.adempiere.webui.desktop.TabbedDesktop.openForm(	at org.adempiere.webui.desktop.DefaultDesktop.openForm(	at org.adempiere.webui.desktop.AbstractDesktop.onMenuSelected(	at org.adempiere.webui.desktop.DefaultDesktop.onMenuSelected(	at org.adempiere.webui.panel.AbstractMenuPanel.fireMenuSelectedEvent(	at org.adempiere.webui.panel.AbstractMenuPanel.doOnClick(	at org.adempiere.webui.panel.AbstractMenuPanel.onEvent(	at org.adempiere.webui.panel.MenuTreePanel.onEvent(	at org.zkoss.zk.ui.AbstractComponent.onEvent(