求帮助，可否抽出一点时间描述这个方法里的每行都是做什么用的
private void fillData() {
//创建一个集合(应该是这样吧？如果不对请具体描述下)
List<String> items = new ArrayList<String>();
//创建Operator对象key,遍历ConditionUtil中的ipList集合（ List<Operator> ipList = new ArrayList<Operator>();）
for (Operator key : ConditionUtil.ipList) {
//将key.getKey添加进 集合（最好能再具体点，我自己这么理解觉得太简单，希望有具体而容易理解的描述）
items.add(key.getKey());
}
//这句我有些疑问，强转成String数组是怎样一个过程呢？
combo.setItems((String[]) items.toArray(new String[0]));
//这句也很迷惑，作用是什么？下拉列表放4个值这怎么才放一个？
combo.select(0);
stacklayout.topControl = singleComp;
// UiCondition uc（怎么描述？UiCondition 类中变量为空?）或this.uc.getCondition()这个指的什么呢?Condition具体类在下面) if (this.uc == null || this.uc.getCondition() == null)
return;
group.setText(this.uc.getUiname());
if (this.uc.isUsed()) {
for (Operator key : ConditionUtil.ipList) {
if (this.uc.getCondition().getOperator().equals(key.getValue())) {
combo.select(key.getOrder());
if (key.getValue().equals("in")
|| key.getValue().equals("out")) {
stacklayout.topControl = scopComp;
stackcomp.layout();
//这行真没明白
String str[] = this.uc.getUivalue().split(",");
value1.setText(str[0]);
value2.setText(str[1]);
} else {
stacklayout.topControl = singleComp;
stackcomp.layout();
value.setText(this.uc.getUivalue());
}
break;
}
}
}

}
public class Condition {
private String value;

private String name;

private String operator;
}
public class ConditionUtil {

public static List<Operator> charList = new ArrayList<Operator>();

public static List<Operator> ipList = new ArrayList<Operator>();

public static List<Operator> numbList = new ArrayList<Operator>();

public static List<Operator> timeList = new ArrayList<Operator>();
}
ublic class UiCondition {
private Condition condition;

private String judge;

private boolean used;

private String uiname;

private String uivalue;

public static String CHAR = "char";

public static String NUMB = "numb";

public static String IP = "ip";

public static String TIME = "time";
}
求指点了自己理解的有错误希望各位给指正让我少走些弯路

[解决办法]

Java code

private void fillData() {  //创建一个列表ArrayList,里面保存的是String对象  List<String> items = new ArrayList<String>();  //创建Operator对象key,遍历ConditionUtil中的ipList集合（ List<Operator> ipList = new ArrayList<Operator>();）  for (Operator key : ConditionUtil.ipList) {//ConditionUtil.ipList中的每一个元素Operator对象key的getKey()值添加到列表items里面  items.add(key.getKey());  }//items.toArray(new String[0])这样就够了,toArray利用根据参数new String[0],创建String数据,(String[])这个强转是多余的,本来就是String[],不需要转换,也不能用强转转成别的数据  combo.setItems((String[]) items.toArray(new String[0]));//意思是combo选择第一个元素  combo.select(0);  stacklayout.topControl = singleComp;// 代码不全还是怎么的,没看到getCondition()这方法  if (this.uc == null || this.uc.getCondition() == null)  return;  //group是个JText吧,把Text设置成UIname的值  group.setText(this.uc.getUiname());  if (this.uc.isUsed()) {  for (Operator key : ConditionUtil.ipList) {  if (this.uc.getCondition().getOperator().equals(key.getValue())) {  combo.select(key.getOrder());  if (key.getValue().equals("in")  || key.getValue().equals("out")) {  stacklayout.topControl = scopComp;  stackcomp.layout();//就是把this.uc.getUivalue()的值,用","拆分成字符串数组.比如把"1,2,3,4,5" 拆成{"1","2","3","4","5"}  String str[] = this.uc.getUivalue().split(",");  value1.setText(str[0]);  value2.setText(str[1]);  } else {  stacklayout.topControl = singleComp;  stackcomp.layout();  value.setText(this.uc.getUivalue());  }  break;  }  }  }  }  //下面都是声明,没啥可说的public class Condition {  private String value;  private String name;  private String operator;}public class ConditionUtil {  public static List<Operator> charList = new ArrayList<Operator>();  public static List<Operator> ipList = new ArrayList<Operator>();  public static List<Operator> numbList = new ArrayList<Operator>();  public static List<Operator> timeList = new ArrayList<Operator>();}ublic class UiCondition {  private Condition condition;  private String judge;  private boolean used;  private String uiname;  private String uivalue;  public static String CHAR = "char";  public static String NUMB = "numb";  public static String IP = "ip";  public static String TIME = "time";}