hashmap.java

由于想一次上传成功 所以将二个教程打包成了一个 这些例子几乎包含了所有java的框架集合

import java.util.*;

class hashmap
{
    public static void main(String args[]) 
    {
        HashMap hashmap1 = new HashMap();
        
        hashmap1.put("Item 0", "Value 0");
        hashmap1.put("Item 1", "Value 1");
        hashmap1.put("Item 2", "Value 2");
        hashmap1.put("Item 3", "Value 3");
        hashmap1.put("Item 4", "Value 4");
        hashmap1.put("Item 5", "Value 5");
        hashmap1.put("Item 6", "Value 6");

        Set set = hashmap1.entrySet();

        Iterator iterator = set.iterator();

        while(iterator.hasNext()) {
            Map.Entry mapentry = (Map.Entry) iterator.next();
            System.out.println(mapentry.getKey() + "/" + mapentry.getValue());
        }
    }
}