How Can I Sort Alphabetically?

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Java

OK basically i have a members club full of members and when i want to get all their names back
i use this code but what i really want to do is get them all back alphabetically, and i cant use the help of a java lib i have to use my own sort method. And before any one sends me links to java docs i have already tried but cannot figure it out.

/**
 * List names.
 */
public void listNames() {
    for (int i = 0; i < members.size(); i++) {
        Member member = members.get(i);
        member.getName();
        StdOut.println(i + ":" + member.getName());
    }
}
          }