e476. creating and destroying a subcontext in the naming service.txt

这里面包含了一百多个JAVA源文件

This example creates a subcontext in the naming service. 
    try {
        // Create a subcontext.
        Context childCtx = ctx.createSubcontext("child");
    
        // Destroy the subcontext.
        ctx.destroySubcontext("child");
    } catch (NamingException e) {
    }