找不到或加载主类.java

Question

我在JAVA中有两个用于函数重载的类，即ABC和XYZ。XYZ 类具有函数重载方法，而 ABC 类具有 main 方法。我已将文件保存为 ABC.java。该程序进行编译，但在运行时显示错误"找不到或加载主类 ABC"。我还附上了我的代码以具体说明。

class XYZ
{
   void pqr(int a, int b)
   {
      int res = a*b;
      System.out.println("The result is "+res);
   }
   void pqr(String a, String b)
   {
     System.out.println("The concatenated string is "+a+b);
   }
   void pqr(int a, int b, int c)
{ 
int res = a+b+c;
    System.out.println("The final result is "+res);
}
}
class ABC
{
 public static void main(String[] args)
{
    XYZ a = new XYZ();
    a.pqr(10,20);
    a.pqr("Pratik","Paul");
    a.pqr(20, 40, 60);
 }
}

Answer 1

按照以下步骤操作，

步骤1：

go the bin folder of Java from command prompt(I assume you are trying to run the program from command prompt).
ex: C:Program FilesJavajdk1.8.0_05bin

步骤2：

javac <your ABC.java file with full path>
ex: javac C:TestABC.java
similary do for XYZ.java

步骤3：

Go to C:Test from command prompt and run,
java ABC