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]
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";}