“线程中的异常”；“主要”；java.lang.Error:未解析编译（短语语法）

我尝试从Head First Java运行代码，如下所示：

public class PhraseOMatic {
   public static void main(String[] args){

    String[] wordListOne = {"24/7", "mult-iTier", "30,000 foot", "B-to-B", "win-win", "front-end", "web-based", "pervasive", "smart", "six-sigma", "critical-path", "dynamic"};

    String[] wordListTwo = {"empowered", "sticky", "value-added", "oriented", "centric", "distributed", "clustered", "branded", "outside-the-box", "positioned", "networked", "focused", "leveraged", "aligned", "targeted", "shared", "cooperative", "accelerated"};

    String[] wordListThree = {"process", "tipping-point", "solution", "architecture", "cor competency", "strategy", "mindshare", "portal", "space", "vision", "paradigm", "mission"};

    int oneLength = wordListOne.length;
    int twoLength = wordListTwo.length;
    int threeLength = wordListThree.length;

    int rand1 = (int) (Math.random() * oneLength);
    int rand2 = (int) (Math.random() * twoLength);
    int rand3 = (int) (Math.random() * twoLength);

    String phrase = wordListOne[rand1] + " " + wordListTwo[rand2] + " " + wordListThree[rand3];

    System.out.println("What we need is a " + phrase);
    }
}

我就是在这里收到这个错误：

线程“main”java.lang中出现异常。错误：未解决的编译问题：

at PhraseOMatic.main(apples.java:2)

---

我从错误中看出问题在第2行，但我可以识别错误

请查看异常跟踪（

PhraseOMatic.main（apples.java:2）

）。您的公共类

PhraseOMatic

必须与

PhraseOMatic.java

文件一起保存。顶级公共类和.java文件的名称必须相同。

只需查看

PhraseOMatic.main（apples.java:2）

。您的文件名为

apples.java

，但在java中，您的文件必须与类同名。在您的案例中

PhraseOMatic.java

您的股份跟踪：

PhraseOMatic.main(apples.java:2)

---

因此，您无法运行java来升级类；您的java主类是PhraseOMatic

i编译并运行程序没有错误发生请将代码与

package

语句一起发布，以便我们可以帮助您。@AVD这似乎是OP的所有代码。无论如何，OP提供了足够的信息来解决这个问题：类PhraseOMatic保存在一个名为“apples.java”的文件中。我认为存在一个IDE，可能是OP删除了包语句或其他东西。请将.java文件重命名为

PhraseOMatic.java

。你有IDE（netbeans/eclipse等）吗？