我有這個(gè)代碼（在繼承自的類(lèi)中調(diào)用）。paintComponentJPanel    assert(red >= 0);    assert(red <= 255);    assert(green >= 0);    assert(green <= 255);    assert(blue >= 0);    assert(blue <= 255);    Color color = new Color(red, green, blue);一段時(shí)間后，我得到一個(gè)例外：Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Color parameter outside of expected range: Red    at java.awt.Color.testColorValueRange(Unknown Source)    at java.awt.Color.<init>(Unknown Source)    at java.awt.Color.<init>(Unknown Source)    at display.DrawCanvas.drawLed(DrawCanvas.java:55)    at display.DrawCanvas.paintComponent(DrawCanvas.java:36)    at javax.swing.JComponent.paint(Unknown Source)DrawCanvas.java：55（第 55 行）是上面代碼片段中的最后一行。當(dāng)所有值都介于 0 和 255（包括）之間時(shí)，參數(shù)怎么可能超出范圍？