공.감.로.그!!

# 서버 소스 package org.perte.socket; import java.io.BufferedReader;import java.io.InputStreamReader;import java.io.PrintWriter;import java.net.ServerSocket;import java.net.Socket; public class MakeServerSocket {ServerSocket serverSocket = null;Socket socket = null;PrintWriter writer = null;BufferedReader reader = null;String lineStr;public MakeServerSocket() {try {serverSocket = new ServerSocket(83..

List 타입의 변수를 정렬하는 예제는 다음과 같다. import java.util.*; class Computer implements Comparable{ int serial; String owner; Computer(int serial, String owner){ this.serial = serial; this.owner = owner; } public int compareTo(Object o) { return this.serial - ((Computer)o).serial; } public String toString(){ return serial+" "+owner; }} public class CollectionsDemo { public static void main(String[] args) { ..

import java.util.*; public class MapDemo { public static void main(String[] args) { HashMap a = new HashMap(); a.put("one", 1); a.put("two", 2); a.put("three", 3); a.put("four", 4); System.out.println(a.get("one")); System.out.println(a.get("two")); System.out.println(a.get("three")); iteratorUsingForEach(a); iteratorUsingIterator(a); } static void iteratorUsingForEach(HashMap map){ Set entries ..