如题
编译时出现如下问题

java问题.PNG


源代码如下

package helloWorld;

import com.opensymphony.xwork.Action;

public class HelloWorld implements Action
{
  private String greeting;
  public String getGreeting()
  {
  return greeting;
  }
  public String execute() throws Exception
  {
  greeting = "Hello World!";
  return SUCCESS;
  }
}

应作如下修改:

import javax.swing.Action;

abstract class HelloWorld implements Action
{
  private String greeting;
  public String getGreeting()
  {
  return greeting;
  }
  public String execute(String SUCCESS) throws Exception
  {
  greeting = "Hello World!";
  return SUCCESS;
  }
}


另外,在命令格式下运行的话要把文件拷贝出来,否则就要输出全部文件路径(包括文件夹内的)