ActionListener add=new ActionListener() { public void actionPerformed(ActionEvent actionEvent) { String manu = manutext.getText(); String owner = ownertext.getText(); String reg = regtext.getText(); int nic1 = Integer.parseInt(nic1text.getText()); int nic2 = Integer.parseInt(nic2text.getText()); int nic3 = Integer.parseInt(nic3text.getText()); Car c = new Car(manu,owner,reg,nic1,nic2,nic3); cars.add(c); } }; addbtn.addActionListener(add);
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at driver1$1.actionPerformed(driver1.java:106) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:20 18) at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.jav a:2341) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel .java:402) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259 ) at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonL istener.java:252) at java.awt.Component.processMouseEvent(Component.java:6505) at javax.swing.JComponent.processMouseEvent(JComponent.java:3321) at java.awt.Component.processEvent(Component.java:6270) at java.awt.Container.processEvent(Container.java:2229) at java.awt.Component.dispatchEventImpl(Component.java:4861) at java.awt.Container.dispatchEventImpl(Container.java:2287) at java.awt.Component.dispatchEvent(Component.java:4687) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832 ) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422) at java.awt.Container.dispatchEventImpl(Container.java:2273) at java.awt.Window.dispatchEventImpl(Window.java:2719) at java.awt.Component.dispatchEvent(Component.java:4687) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:703) at java.awt.EventQueue.access$000(EventQueue.java:102) at java.awt.EventQueue$3.run(EventQueue.java:662) at java.awt.EventQueue$3.run(EventQueue.java:660) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo main.java:76) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo main.java:87) at java.awt.EventQueue$4.run(EventQueue.java:676) at java.awt.EventQueue$4.run(EventQueue.java:674) at java.security.AccessController.doPrivileged(Native Method) at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDo main.java:76) at java.awt.EventQueue.dispatchEvent(EventQueue.java:673) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThre ad.java:244) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread. java:163) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre ad.java:151) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139) at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)
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