您必须将滚动条的范围添加到您的计算中。我在下面的示例中将代码添加到您的代码中。
scrollPane.getVerticalScrollBar().addAdjustmentListener(new AdjustmentListener() {
@Override
public void adjustmentValueChanged(AdjustmentEvent ae) {
int extent = scrollPane.getVerticalScrollBar().getModel().getExtent();
System.out.println("Value: " + (scrollPane.getVerticalScrollBar().getValue()+extent) + " Max: " + scrollPane.getVerticalScrollBar().getMaximum());
}
});
scrollPane.getVerticalScrollBar().addAdjustmentListener(new AdjustmentListener() {
@Override
public void adjustmentValueChanged(AdjustmentEvent event) {
JScrollBar scrollBar = (JScrollBar) event.getAdjustable();
int extent = scrollBar.getModel().getExtent();
System.out.println("1. Value: " + (scrollBar.getValue() + extent) + " Max: " + scrollBar.getMaximum());
}
});
或通过模型
scrollPane.getVerticalScrollBar().getModel().addchangelistener(new changelistener() {
@Override
public void stateChanged(ChangeEvent event) {
BoundedRangeModel model = (BoundedRangeModel) event.getSource();
int extent = model.getExtent();
int maximum = model.getMaximum();
int value = model.getValue();
System.out.println("2. Value: " + (value + extent) + " Max: " + maximum);
}
});
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