Oracle XE 11.2.0.2.0 遠隔接続

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Oracleのポート(基本1521)開放：

1. FirewallのインバウンドルールにOracleのポート追加

2. Router設定でOracleのポートをポーフォワードする。

OracleのパソコンのパブリックIPとOracleのポートで接続。


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Java InetAddress.getHostName()/getHostAddress

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import java.net.InetAddress; import java.util.Scanner; class Blog { public static void main(String[] args) throws Exception { new Byul(); } } class Byul { Scanner sc; Byul() { sc = new Scanner(System.in); while (true) { System.out.println("Host 이름을 입력하세요."); try { InetAddress ia = InetAddress.getByName(sc.next()); System.out.println("Computer NAME: " + ia.getHostName()); System.out.println("Computer IP: " + ia.getHostAddress()); } catch (Exception e) { System.out.println(e.getMessage()); } } } }
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Grouping program v2.0

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Title Enter number of groups and names of students. Press 0 to stop entering. names: entered names shuffled names: self-explanatory modulus o or x: self-explanatory quotient: number of names to push into each group Program is restarted automatically after.  Updates from v1.0 1. now supports smart grouping mode. ex: dividing 19 people to 4 groups. result: 3 groups of 5 people and 1 group of 4 people. 2. automatic program reboot. Loader class Main class import java.io.IOException; import java.util.ArrayList; import java.util.Collections; import java.util.Scanner; public class Main { private Scanner sc; int groups; int quotient; ArrayList<String> students; ArrayList<ArrayList<String>> result; public Main() { this.main(); } public void main() { this.printTitle(); this.print("Press Enter to Continue..."); try { System.in.read(); } catch (IOException e) { e.printStackTrace(); } this.print("How many groups?"); ...
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