Question

java swt出错，初学者求解决

错误：
Exception in thread "main" java.lang.IllegalArgumentException: Argument cannot be null
at org.eclipse.swt.SWT.error(SWT.java:4064)
at org.eclipse.swt.SWT.error(SWT.java:3998)
at org.eclipse.swt.SWT.error(SWT.java:3969)
at org.eclipse.swt.widgets.Widget.error(Widget.java:468)
at org.eclipse.swt.widgets.Text.setText(Text.java:1951)
at id.id$1.widgetSelected(id.java:87)
at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
at id.id.main(id.java:39)
代码如下：

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Answer 1

额。。我想问，你这写法是什么语言转过来的，看着怪别扭的，大小写之类的全部都没区分。错误的话，应该是，text.setText(null);这个不能设置为null，改成text.setText("");就可以了。