を使用していくつかの例外を処理したいと思いJOptionPane
ます。これが主な方法です。
public class MainRun {
public static void main(String args[]){
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
try {
UIManager.setLookAndFeel(new SubstanceRavenGraphiteGlassLookAndFeel());
}catch (Exception e){
e.printStackTrace();
}
new MainGui().setVisible(true);
new Initialized().start();
new PriorityMessageQueue().start();
}
});
MainGui
アプリケーションのメインウィンドウ(JFrame
)です。PriorityMessageQueue
スレッド内で例外を処理しました。
public class PriorityMessageQueue extends Thread {
@Override
public void run() {
while (true) {
try {
instantMessages = instant.getMobitelMessagesToBeSent();
} catch (Exception ex) {
JOptionPane.showMessageDialog(
null,
ex.getMessage(),
"Database Error",
JOptionPane.ERROR_MESSAGE);
}
...
これを実行した後、エラーが発生します
org.jvnet.substance.api.UiThreadingViolationException: Component creation must be done on Event Dispatch Thread
at org.jvnet.substance.utils.SubstanceCoreUtilities.testComponentCreationThreadingViolation(SubstanceCoreUtilities.java:2312)
at org.jvnet.substance.SubstanceOptionPaneUI.createUI(SubstanceOptionPaneUI.java:83)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at sun.reflect.misc.Trampoline.invoke(MethodUtil.java:37)
at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at sun.reflect.misc.MethodUtil.invoke(MethodUtil.java:244)
at javax.swing.UIDefaults.getUI(UIDefaults.java:752)
at javax.swing.UIManager.getUI(UIManager.java:989)
at javax.swing.JOptionPane.updateUI(JOptionPane.java:1859)
at javax.swing.JOptionPane.<init>(JOptionPane.java:1822)
at javax.swing.JOptionPane.<init>(JOptionPane.java:1785)
at javax.swing.JOptionPane.<init>(JOptionPane.java:1753)
at javax.swing.JOptionPane.<init>(JOptionPane.java:1731)
at javax.swing.JOptionPane.<init>(JOptionPane.java:1711)
at GUI.MainGui.showOptionPane(MainGui.java:1039)
at SMS.PriorityMessageQueue.run(PriorityMessageQueue.java:86)
UIDefaults.getUI() failed: createUI() failed for
javax.swing.JOptionPane
[,0,0,0x0,invalid,alignmentX=0.0,alignmentY=0.0,border=,flags=0,maximumSize=,minimumSize=,p
referredSize=,icon=,initialValue=,message=DatabaseConnection class
connect,messageType=ERROR_MESSAGE,optionType=DEFAULT_OPTION,wantsInput=false]
java.lang.reflect.InvocationTargetException
java.lang.Error
at javax.swing.UIDefaults.getUIError(UIDefaults.java:712)
at javax.swing.MultiUIDefaults.getUIError(MultiUIDefaults.java:133)
at javax.swing.UIDefaults.getUI(UIDefaults.java:758)
at javax.swing.UIManager.getUI(UIManager.java:989)
at javax.swing.JOptionPane.updateUI(JOptionPane.java:1859)
at javax.swing.JOptionPane.<init>(JOptionPane.java:1822)
at javax.swing.JOptionPane.<init>(JOptionPane.java:1785)
at javax.swing.JOptionPane.<init>(JOptionPane.java:1753)
at javax.swing.JOptionPane.<init>(JOptionPane.java:1731)
at javax.swing.JOptionPane.<init>(JOptionPane.java:1711)
at GUI.MainGui.showOptionPane(MainGui.java:1039)
at SMS.PriorityMessageQueue.run(PriorityMessageQueue.java:86)
そして、JOptionPane
が正しく表示されません!
に渡す代わりにnull
、JOptionPane
parentComponent(MainGui
JFrame
)を取得するにはどうすればよいですか?