求JAVA編程題答案+思路,感謝！

編寫電池類（Cell）：具有品牌屬性，可以續電public class Cell {private String brand;public String getBrand() {return brand;}public void setBrand(String brand) {this.brand = brand;}Cell(String brand){this.brand = brand;}public void relay() {System.out.println("正在續電.");}}編寫測試類（TestCell）import javax.swing.CellEditor;public class TestCell {public static void main(String[] args) {Cell cell = new Cell("大牌電池");System.out.println("測試結果："+cell.getBrand());cell.relay();}}

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