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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.

Solutions on the web

via https://bugzilla.redhat.com/bugzilla/ by Tomas Livora, 1 year ago
via Stack Overflow by Unknown author, 2 years ago
via Oracle Community by 807596, 1 year ago
via Oracle Community by 843841, 1 year ago
java.lang.NumberFormatException: null	at java.lang.Integer.parseInt(Integer.java:443)	at java.lang.Integer.parseInt(Integer.java:514)	at com.smj.webui.apps.form.WSimplifiedSales.(WSimplifiedSales.java:133)	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)	at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)	at java.lang.reflect.Constructor.newInstance(Constructor.java:534)	at java.lang.Class.newInstance(Class.java:379)	at org.smj.webui.factory.PosFormFactory.newFormInstance(PosFormFactory.java:32)	at org.adempiere.webui.Extensions.getForm(Extensions.java:46)	at org.adempiere.webui.panel.ADForm.openForm(ADForm.java:154)	at org.adempiere.webui.panel.ADForm.openForm(ADForm.java:136)	at org.adempiere.webui.desktop.TabbedDesktop.openForm(TabbedDesktop.java:88)	at org.adempiere.webui.desktop.DefaultDesktop.openForm(DefaultDesktop.java:713)	at org.adempiere.webui.desktop.AbstractDesktop.onMenuSelected(AbstractDesktop.java:76)	at org.adempiere.webui.desktop.DefaultDesktop.onMenuSelected(DefaultDesktop.java:753)	at org.adempiere.webui.panel.AbstractMenuPanel.fireMenuSelectedEvent(AbstractMenuPanel.java:302)	at org.adempiere.webui.panel.AbstractMenuPanel.doOnClick(AbstractMenuPanel.java:251)	at org.adempiere.webui.panel.AbstractMenuPanel.onEvent(AbstractMenuPanel.java:225)	at org.adempiere.webui.panel.MenuTreePanel.onEvent(MenuTreePanel.java:116)	at org.zkoss.zk.ui.AbstractComponent.onEvent(AbstractComponent.java:2742)