相关疑难解决方法(0)

说我有这个代码 -

public interface ParentInterface1 {
    public List<? extends ChildInterface1> getChildren();
    public void setChildren(List<? extends ChildInterface1> children);
}
public interface ParentInterface2 {
    public List<? extends ChildInterface2> getChildren();
    public void setChildren(List<? extends ChildInterface2> children);
}
public interface ChildInterface1 {
    public String getField();
    public void setField(String field);
}
public interface ChildInterface2 {
    public String getField();
    public void setField(String field);
}
public class LParentImpl implements ParentInterface1, ParentInterface2 {
    private List<ChildImpl> list;
    public List<ChildImpl> getChildren() {
        return list;
    }
    public void setChildren(List<... wants to …