请教关于Hashtable的使用！

[attiseve]

Hashtable怎么用？用不用try{...}catch{...}，抛出什么类？怎么按照j2sdk_doc中介绍的Hashtable的使用方法也不行？

[javastu]

关注!

[attiseve]

谢谢关注！

[gdsean]

This example creates a hashtable of numbers. It uses the names of the numbers as keys:


Hashtable numbers = new Hashtable();
numbers.put("one", new Integer(1));
numbers.put("two", new Integer(2));
numbers.put("three", new Integer(3));

To retrieve a number, use the following code:


Integer n = (Integer)numbers.get("two");
if (n != null) {
System.out.println("two = " n);
}

[yangjuanli]

gdsean(摇滚java) 写的基本正确，
只是非曲直 System.out.println("two = " n);
应写成 System.out.println("two = " + n);