jndi.java

java经典的源代码 我非常喜欢这个源代码 对于编程很有好处

import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import java.util.Hashtable;
import java.io.*;

public class jndi {
  public static void main(String[] args) {
    String filename="zyd.txt";
    String dirname="music";
    try{
      Hashtable env=new Hashtable();
      env.put(Context.INITIAL_CONTEXT_FACTORY,"com.sun.jndi.fscontext.RefFSContextFactory");
      env.put(Context.PROVIDER_URL,"file:/d:/java");
      Context ctx=new InitialContext(env);
      Object obj=ctx.lookup(filename);
      System.out.println(filename+"is bound to:"+obj);
      Context dirObj=(Context)ctx.lookup(dirname);
      System.out.println(dirname+" is bound to :"+ dirObj);
      ctx.close();
    }
    catch(NamingException e){
      System.err.println("Error: "+e);
    }
  }
}