Databases
StackOverflow2013
Postsdbo
POJTable value from another JFrame
Body
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POJTable value from another JFrame
    text
    copied!<p>I have <code>JTable</code> and I want to set value at specific cell from another frame. When I try to do it, I get null pointer exception. I changed the modifiers and removed the exception, but still can't set the value.</p> <p>Please guys help</p> <pre><code>public ChequeVoucher(int id,int row){ try { String str = get_bank_name(id); System.out.println(str); table.getModel().setValueAt(str,row,5); table.getModel().setValueAt(id,row,4); } catch (SQLException f) { } setBank(id,row); } public void setBank(int id,int row){ try { String str = get_bank_name(id); table.getModel().setValueAt(str,row,5); } catch (SQLException f) { } } </code></pre> <p>The chequevoucher is my constructor and this piece of code is good until this </p> <pre><code> table.getModel().setValueAt(str,row,5); </code></pre> <p>and the <code>JFrame</code> I get the value from is </p> <pre><code> table.addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent e) { int row = table.getSelectedRow(); int col = table.getSelectedColumn(); String str_id = (String)GetID(row,0); int id = Integer.parseInt(str_id); ChequeVoucher CV = new ChequeVoucher(id,row); setVisible(false); } }); </code></pre> <p>The access modifiers wasn't static so I get the following error stack</p> <pre> Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException at client.ChequeVoucher.(ChequeVoucher.java:215) at client.popupBanks$3.mouseClicked(popupBanks.java:130) at java.awt.AWTEventMulticaster.mouseClicked(AWTEventMulticaster.java:253) at java.awt.Component.processMouseEvent(Component.java:6292) at javax.swing.JComponent.processMouseEvent(JComponent.java:3267) at java.awt.Component.processEvent(Component.java:6054) at java.awt.Container.processEvent(Container.java:2041) at java.awt.Component.dispatchEventImpl(Component.java:4652) at java.awt.Container.dispatchEventImpl(Container.java:2099) at java.awt.Component.dispatchEvent(Component.java:4482) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4577) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4247) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4168) at java.awt.Container.dispatchEventImpl(Container.java:2085) at java.awt.Window.dispatchEventImpl(Window.java:2478) at java.awt.Component.dispatchEvent(Component.java:4482) at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:644) at java.awt.EventQueue.access$000(EventQueue.java:85) at java.awt.EventQueue$1.run(EventQueue.java:603) at java.awt.EventQueue$1.run(EventQueue.java:601) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:98) at java.awt.EventQueue$2.run(EventQueue.java:617) at java.awt.EventQueue$2.run(EventQueue.java:615) at java.security.AccessController.doPrivileged(Native Method) at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87) at java.awt.EventQueue.dispatchEvent(EventQueue.java:614) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161) at java.awt.EventDispatchThread.run(EventDispatchThread.java:122) </pre> <p>When I made the modifiers static, I get no exceptions but nothing happens and I can't listen to the <code>JTable</code> anymore </p> <pre><code> case KeyEvent.VK_F5: switch(col){ case 4: //show the banks popupBanks pB = new popupBanks(row); pB.setVisible(true); break; } </code></pre> <p>Sorry for the previous unclear post </p>
 

Querying!

 
Guidance
An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload