来自另一个java项目的toString打印类型名称

时间:2012-08-02 23:08:24

标签: java project tostring

所以我知道覆盖“toString”以查看你想要的东西而不是类型,但在我的情况下整体情况是:

Project1:ClassA使用Project2:ClassB我将Project2包含在Project1类路径中,编译工作正常。但是,Project2:ClassB.toString()打印project2.package.classC代替classB的classC元素。

注意,一旦我将classB复制到project1中,打印工作正常,我会看到元素。

以下是我在当前project1中使用的project2的classB快照:

package edu.cs;
public class FeatureWeightArrayWritable implements Writable {//classB

    public int vectorSize;
    public FeatureWeight[] vector; //classC = FeatureWeight

    @Override
    public String toString() {
        StringBuilder buffer = new StringBuilder();
        for (int i = 0; i < this.vectorSize; i++)
            buffer.append(vector[i].feature + " " + vector[i].weight);
        // return buffer.toString();
        return "Can't see this !!! I see edu.cs.FeatureWeight@32829 ";
    }
}

如果你对FeatureWeight类有疑问,我也会覆盖它的toString,但是如果我有上面的返回消息,它甚至不应该被使用。有线索吗?

以下是我的阅读方式:

Reader reader = new SequenceFile.Reader(fs, inputPath, conf);

Writable key = (Writable) reader.getKeyClass().newInstance();
FeatureWeightArrayWritable value = new FeatureWeightArrayWritable();

while (reader.next(key, value))     
    System.out.println("key:" + key.toString() + ", value:" + value.toString());

1 个答案:

答案 0 :(得分:0)

检查你的类路径,并确保你没有FeatureWeightArrayWritable放置在某个地方的另一个副本(旧类文件,jar文件,第三个项目等)。