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public class NetworkEntry {
private String name;
private int cost;
private StringListExt predList;
private StringListExt succList;
public NetworkEntry(String nameval, int costval, String pred){
name = nameval;
cost = costval;
predList = new StringListExt();
succList = new StringListExt();
predList.add(pred);
}
所以构造函数应该实例化predList和succList,同时在predList中添加红色的字符串。但是,当我调用print来查看predList和succList中的内容时,pred会出现在它们两个中。尝试将字符串添加到一个字符串列表,但最终将字符串添加到两个字符串列表。
而且StringListExt只是
protected static ArrayList <String> list;
public StringList() {
list = new ArrayList <String>();
}