OutOfMemory Error

    public static void getAllDataList(List<Data> dataList){
        for(int i=0; i<dataList.size(); i++){
            String term = dataList.get(i).getTerm() + " ";
            String type = dataList.get(i).getType() + " ";
            for(int j=i+1; j<dataList.size(); j++){
                term = term + dataList.get(j).getTerm() + " ";
                type = type + dataList.get(j).getType() + " ";
                dataList.add(new Data(type, term, null));
            }
        }
    }

上面这段代码是会出现内存泄露的，因为dataList.size()的值是不停增加的，因为循环里面有dataList.add，所以是个无穷循环。

改正如下：

    public static void getAllDataList(List<Data> dataList){
        int length = dataList.size();
        for(int i=0; i<length; i++){
            String term = dataList.get(i).getTerm() + " ";
            String type = dataList.get(i).getType() + " ";
            for(int j=i+1; j<length; j++){
                term = term + dataList.get(j).getTerm() + " ";
                type = type + dataList.get(j).getType() + " ";
                dataList.add(new Data(type, term, null));
            }
        }
    }