Question

这是我的代码

我得到了一串单词，而不仅仅是一个单词，我认为我完成了它。如果你可以给我一些很棒的指针，我包含所有代码的唯一原因是我可能已经看了一些东西，我认为它与短语的构建有关但我不确定

//import java libraries
import java.awt.*;
import javax.swing.*;
public class Emotion extends JFrame
{
    //set what you can use
    private JLabel label;
    private JLabel phrasem;

    public Emotion()
    {
        setLayout( new FlowLayout());

        //Wordlists
        String[] wordlistone =
        {
                "anger","misery"+"sadness"+"happiness"+"joy"+"fear"+"anticipation"+"surprise"+"shame"+"envy"+"indignation"+"courage"+    "pride"+"love"+"confusion"+"hope"+"respect"+"caution"+"pain"
        };

        //number of words in each list
        int onelength = wordlistone.length;

        //random number
        int rand1 = (int) (Math.random() * onelength);


        //building phrase
        String phrase = wordlistone[rand1];

        // printing phrase

        phrasem = new JLabel("PhraseOMatic says:");
        add (phrasem);

        label = new JLabel("Today you emotion is: " + phrase);
        add (label);

    }
    public static void main(String[] args)
    {
        Emotion gui = new Emotion();
        gui.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        gui.setSize(400, 100);
        gui.setVisible(true);
        gui.setTitle("My App (Alex Gadd)");

    }

}

Answer 1

您有+，您应该在单词列表中有, 我想你只是误解了那两个。

String[] wordlistone = {
    "anger", "misery", "sadness", "happiness", "joy", "fear", "anticipation",
    "surprise", "shame", "envy", "indignation", "courage", "pride", "love",
    "confusion", "hope", "respect", "caution", "pain"
};

此外，您可以使用java.util.Random轻松获得随机int，它优于Math.random()

Random rand = new Random();

int i = rand.nextInt(wordlistone.length);

Answer 2

加号“+”运算符连接只产生一个单词的字符串。初始化字符串数组时，使用逗号作为单词分隔符。

Answer 3

您的单词列表数组只有两个元素。您在第一个和第二个之间使用了逗号，然后通过与其余单词串联意外地创建了一个大字符串。改变这个：

    String[] wordlistone =
    {
            "anger","misery"+"sadness"+"happiness"+"joy"+"fear"+"anticipation"+"surprise"+"shame"+"envy"+"indignation"+"courage"+    "pride"+"love"+"confusion"+"hope"+"respect"+"caution"+"pain"
    };

到此

    String[] wordlistone =
    {
            "anger", "misery", "sadness", "happiness", "joy", "fear", "anticipation", "surprise", "shame", "envy", "indignation", "courage", "pride", "love", "confusion", "hope", "respect", "caution", "pain"
    };

Answer 4

两个观察结果：

您的array包含连续的String值，因此您应将+替换为,
您可能希望在此处使用Random对象 - Math.random() * wordlistone.length无效

这是我的版本：

String[] wordlistone = {
    "anger","misery","sadness","happiness","joy","fear","anticipation","surprise","shame","envy",
    "indignation","courage", "pride","love","confusion","hope","respect","caution","pain"           
};

Random r = new Random(); // you can reuse this - no need to initialize it every time
System.out.println(wordlistone[r.nextInt(wordlistone.length)]);

我正在努力创造一个随机词而不是一串词

4 个答案: