달빛에 스러지는 낙엽들.

import java.util.*;

public class Test {
    public static void main (String args[]) {

        java.util.Scanner in = new Scanner(System.in);

        ArrayList binary = new ArrayList(); // 2진수 배열저장
        ArrayList octal = new ArrayList();  // 8진수 배열저장
        int input = in.nextInt();           // 입력받은 숫자
        int input2 = input;                 // 입력받은 숫자


        System.out.print("숫자를 입력하세요. : ");

        while(input !=0){
            binary.add(input % 2);
            input = input / 2;
        }

        while(input2 !=0){
            octal.add(input2 % 8);
            input2 = input2 / 8;
        }


        System.out.print("2진수 : ");
        for(int a = binary.size(); a > 0; a --){
            System.out.print(binary.get(a-1));
        }
       
        System.out.println("");               // 줄바꿈

        System.out.print("8진수 : ");
        for(int a = octal.size(); a > 0; a --){
            System.out.print(octal.get(a-1));
        }

    }
}

import java.io.*;
public class SysInfo {
public static void main(String[] args) throws Exception
    {
        Process proc = null;
        BufferedReader procStdOut = null;
        try
        {
            // windows 폴더내의 systeminfo 파일을 읽어온다.
            proc = Runtime.getRuntime().exec("C:\\WINDOWS\\system32\\systeminfo");
            procStdOut = new BufferedReader(new InputStreamReader(proc.getInputStream()));
            String line;
            while (true)
            {
                line = procStdOut.readLine();
                if (line == null) break;

                System.out.println(line);
            }
        }
        catch (Exception e)
        {
            throw e;
        }
        finally
        {
            if (proc != null)
            proc.destroy(); // process를 kill시킨다.
            if (procStdOut != null)
            procStdOut.close();
        }
    }
} 

import java.util.Enumeration;
import java.util.Properties;


public class GetRuntimeInfo {
    private void getRuntimeInformation(){
        Properties properties = null;
       
        try{
            properties = System.getProperties();
        }catch(Exception e){
            e.printStackTrace();
        }
       
        Enumeration en = properties.propertyNames();
        while(en.hasMoreElements()){
            String s = (String)en.nextElement();
            String stringValue = properties.getProperty(s);
            System.out.println(s + " : " + stringValue);           
        }
    }
   
    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        new GetRuntimeInfo().getRuntimeInformation();
    }
}