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我的程序旨在通过重复打印随机生成的行来创建一首随机诗。我有一个名为 Line 的类,它有一个可以操作的字段线:

private StringBuilder line = new StringBuilder();

构造函数如下所示:

public Line(int length, String pathOfWordList) throws IOException {
    this.length = length;
    populateLine(length, pathOfWordList);
}

词表有三种词:名词动词和形容词,每一种都有被选中的概率。

populateLine 选择并准备一个要添加到 StringBuilder 行的单词。Words 是 Word 类的对象,有两个字段:

private Type wordType;
private String word;

其中 Type 是具有三种单词类型的枚举。

填充行然后通过调用调用方法的方法添加单词。第一种方法有这个签名:

// currentWord is the word that we have to insert after.
// wordList is the word bank we draw from.
// line is the line we are working with.
// The last two doubles are the probabilities of the three types of words.
// The third one can be inferred
private void getNextWord(Word currentWord, WordList wordList,
        StringBuilder line, double nounProb, double verbProb)

该方法有一堆调用此方法的循环:

// Adds a word to the line and updates its type
// Used by getNextWord
private void loopHelper(Word currentWord, Type type, WordList wordList,
        StringBuilder line) {
    currentWord.setType(type);
    currentWord.setWord(wordList.getWord(type));
    line.append(" " + currentWord);
}

最后出于测试目的,我制作了一个打印出该行的方法:

public void printPoemLine() {
    System.out.println(this.line.toString());
}

但是当我实例化并调用该方法时,我得到了这个奇怪的输出:

com.jeanlucthumm.poem.Word@7852e922 com.jeanlucthumm.poem.Word@7852e922 com.jeanlucthumm.poem.Word@7852e922 com.jeanlucthumm.poem.Word@7852e922 com.jeanlucthumm.poem.Word@7852e922 com.jeanlucthumm.poem.Word@7852e922

谁能告诉我那是什么?我只在互联网上找到了另一篇具有这种类型输出的文章,它正在处理类型擦除,但我不确定是否适用于此。

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1 回答 1

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通过做:

line.append(" " + currentWord);

默认情况下,您隐式调用 whichcurrentWord.toString()返回一个字符串,如下所示:com.jeanlucthumm.poem.Word@7852e922
<the name of the class>@<hash-code of the object>

于 2014-06-29T21:34:34.507 回答