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/* @test
@ bug 4235420
@ summary Tests that JTable delays creating Renderers and Editors
@ author Peter Zhelezniakov
*/
import javax.swing.*;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
public class bug4235420 {
public static void main(String[] argv) throws Exception {
for (UIManager.LookAndFeelInfo LF :
UIManager.getInstalledLookAndFeels()) {
try {
UIManager.setLookAndFeel(LF.getClassName());
} catch (UnsupportedLookAndFeelException ignored) {
System.out.println("Unsupported L&F: " + LF.getClassName());
} catch (ClassNotFoundException | InstantiationException
| IllegalAccessException e) {
throw new RuntimeException(e);
}
System.out.println("Testing L&F: " + LF.getClassName());
if ("Nimbus" .equals(UIManager.getLookAndFeel().getName()) ||
"GTK" .equals(UIManager.getLookAndFeel().getID())) {
System.out.println("The test is skipped for Nimbus and GTK" );
continue ;
}
SwingUtilities.invokeAndWait(new Runnable() {
@Override
public void run() {
Table table = new Table();
table.test();
}
});
}
}
private static class Table extends JTable {
public void test() {
// Renderers
Class [] rendererClasses = {Object.class , Number.class , Date.class , ImageIcon.class , Boolean .class };
Map copy = new HashMap(defaultRenderersByColumnClass);
for (Class rendererClass : rendererClasses) {
Object obj = copy.get(rendererClass);
if (obj instanceof TableCellRenderer) {
throw new Error("Failed: TableCellRenderer created for " +
rendererClass.getClass().getName());
}
}
// Editors
Class [] editorClasses = {Object.class , Number.class , Boolean .class };
copy = new HashMap(defaultEditorsByColumnClass);
for (Class editorClass : editorClasses) {
Object obj = copy.get(editorClass);
if (obj instanceof TableCellEditor) {
throw new Error("Failed: TableCellEditor created for " +
editorClass.getClass().getName());
}
}
}
}
}
Messung V0.5 in Prozent C=97 H=86 G=91
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-06-11)
¤
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