作者傳說

你的問題寫成這樣子會比較好吧?


public class MyInfo {
private String info = "myInfo";
private MySubObj[] subObjs = new MySubObj[5];

public MyInfo() {
subObjs[0] = new MySubObj2();
subObjs[1] = new MySubObj2();
subObjs[2] = new MySubObj1();
subObjs[3] = new MySubObj2();
subObjs[4] = new MySubObj1();
}

public String getInfo() {
return info;
}

public String getSubInfo() {
String result = "";
for(MySubObj so : subObjs) {
result += so.getSubValue();
}
return result;
}
}

public abstract class MySubObj {
private String value = "mySubObj";

public String getValue() {
return value;
}

public abstract String getSubValue();
}

public class My...