[問題] runtime error

[wrltertnna (小妹)]

Exception in thread "main" java.lang.NoClassDefFoundError: Ex01_4/java
Caused by: java.lang.ClassNotFoundException: Ex01_4.java
        at java.net.URLClassLoader$1.run(Unknown Source)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
        at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
        at java.lang.ClassLoader.loadClass(Unknown Source)
Could not find the main class: Ex01_4.java.  Program will exit.

為什麼所有程式都錯一樣啊?

class Mynumber {
      int number;
}

class Ex01_4 {
      public static void main(String[] args) {
             Mynumber a= new Mynumber();
             a.number= 10;
             System.out.println("a.number= "+a.number);
      }
}

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◆ From: 60.246.141.219
→ james732:程式本身沒問題，建議說說你是怎麼編譯與執行的
→ rmbrick:public class??
→ tomoyaken14:class path沒有設定好?
→ kaomark:看到 Could not find the main class: Ex01_4.java.
→ kaomark:該不會是執行了 java Ex01_4.java 這樣子的東西吧?
→ kaomark:先 javac Ex01_4.java 再 java Ex01_4 看看能不能動
推 gorky:linux的話　先試試　java Ex01_4 --cp .
→ wrltertnna:可以了~原來多打了.java XD