EventQueueCore.java 文件源码

private void updateCurrentEventAndTime(AWTEvent event) {
    currentEvent = event;
    long when = 0;
    if (event instanceof ActionEvent) {
        when = ((ActionEvent) event).getWhen();
    } else if (event instanceof InputEvent) {
        when = ((InputEvent) event).getWhen();
    } else if (event instanceof InputMethodEvent) {
        when = ((InputMethodEvent) event).getWhen();
    } else if (event instanceof InvocationEvent) {
        when = ((InvocationEvent) event).getWhen();
    }
    if (when != 0) {
        mostRecentEventTime = when;
    }
}