Joonghee's Laboratory

https://www.programcreek.com/2009/02/overriding-and-overloading-in-java-with-examples/

http://secretroute.tistory.com/entry/%EC%9E%90%EB%B0%94%EC%9D%98%E7%A5%9E-Vol1-%EB%B9%84%ED%8A%B8-%EC%8B%9C%ED%94%84%ED%8A%B8-%EC%97%B0%EC%82%B0%EC%9E%90

http://stackoverflow.com/questions/1353309/java-static-vs-non-static-inner-class A non-static nested class has full access to the members of the class within which it is nested. A static nested class does not have a reference to a nesting instance, so a static nested class cannot invoke non-static methods or access non-static fields of an instance of the class within which it ..

http://www.geeksforgeeks.org/static-class-in-java/ What are the differences between static and non-static nested classes? Following are major differences between static nested class and non-static nested class. Non-static nested class is also called Inner Class. 1) Nested static class doesn’t need reference of Outer class, but Non-static nested class or Inner class requires ..

So, when you read byte stream from a file, you should not use char array. You should use byte array. http://howtodoinjava.com/2014/11/04/how-to-read-file-content-into-byte-array-in-java/ private static byte[] readContentIntoByteArray(File file) { FileInputStream fileInputStream = null; byte[] bFile = new byte[(int) file.length()]; try { // convert file into array of bytes file..

http://stackoverflow.com/questions/3590000/what-does-java-lang-thread-interrupt-do If the targeted thread has been waiting (by calling wait(), or some other related methods that essentially do the same thing, such as sleep()), it will be interrupted, meaning that it stops waiting for what it was waiting for and receive an InterruptedException instead. It is completely up to th..

http://www.xyzws.com/Javafaq/how-to-use-java-stringsplit-method-to-split-a-string-by-dot/214

http://zerioh.tripod.com/ressources/sockets.html // Server public class Provider { ServerSocket providerSocket; Socket connection = null; ObjectOutputStream out; ObjectInputStream in; String message; Provider() { } void run() { try { // 1. creating a server socket providerSocket = new ServerSocket(2004, 10); // 2. Wait for connection System.out.println("Waiting for connection"..

com.exec 라는 같은 package에 ClassA.java와 Exec.java가 있다고 가정을 하련다. 이 때 ClassA가 private으로 정의가 되어 있어도 Exec는 ClassA를 접근할 수 있다. (이걸 잠시 헷갈렸다.ㅡ.ㅡ;;) ex) //ClassA.java package com.exec; class ClassA { ClassA() { System.out.println("ClassA"); } } //Exec.java package com.exec; class Exec{ static public void main(Stri..

// file: Main.java private void tc8() { System.out.println("getSimpleName: " + getClass().getSimpleName()); System.out.println("getName: " + getClass().getName()); } => getSimpleName: Main getName: com.ssu.exec.Main