import java.io.BufferedReader;import java.io.InputStream;import java.io.InputStreamReader;import java.net.InetAddress;import java.net.NetworkInterface;import java.util.ArrayList;import java.util.Formatter;import java.util.List;import java.util.Locale;import java.util.Map;import java.util.Properties;public class test {	//通過截取cmd流方式得到計算機的配置信息(不好)	public static List<String> getIpAddress() {		Process p = null;		List<String> address = new ArrayList<String>();		try {			p = new ProcessBuilder("ipconfig", "/all").start();		}		catch (Exception e) {			return address;		}		StringBuffer sb = new StringBuffer();		//讀取進程輸出值		InputStream inputStream = p.getInputStream();		BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));		String s = "";		try {			while ((s = br.readLine()) != null) {				sb.append(s + "/n");			}		}		catch (Exception e) {			e.printStackTrace();		}		finally {			try {				inputStream.close();			}			catch (Exception e) {				e.printStackTrace();			}		}		System.out.println(sb);		return address;	}	public static void getIpconfig() {		Map<String, String> map = System.getenv();		System.out.println(map.get("USERNAME"));		//獲取用戶名		System.out.println(map.get("COMPUTERNAME"));		//獲取計算機名		System.out.println(map.get("USERDOMAIN"));		//獲取計算機域名	}	//得到計算機的ip地址和mac地址	public static void getConfig() {		try {			InetAddress address = InetAddress.getLocalHost();			NetworkInterface ni = NetworkInterface.getByInetAddress(address);			//ni.getInetAddresses().nextElement().getAddress();			byte[] mac = ni.getHardwareAddress();			String sIP = address.getHostAddress();			String sMAC = "";			Formatter formatter = new Formatter();			for (int i = 0; i < mac.length; i++) {				sMAC = formatter.format(Locale.getDefault(), "%02X%s", mac[i],				            (i < mac.length - 1) ? "-" : "").toString();			}			System.out.println("IP：" + sIP);			System.out.println("MAC：" + sMAC);		}		catch (Exception e) {			e.printStackTrace();		}	}	//得到計算機的ip,名稱,操作系統名稱,操作系統版本	public static void Config() {		try {			InetAddress addr = InetAddress.getLocalHost();			String ip = addr.getHostAddress().toString();			//獲取本機ip			String hostName = addr.getHostName().toString();			//獲取本機計算機名稱			System.out.println("本機IP：" + ip + "/n本機名稱:" + hostName);			Properties props = System.getProperties();			System.out.println("操作系統的名稱：" + props.getProperty("os.name"));			System.out.println("操作系統的版本：" + props.getProperty("os.version"));		}		catch (Exception e) {			e.printStackTrace();		}	}	//其它的一些東西,會有用到的時候的	public static void all() {		Properties props = System.getProperties();		System.out.println("Java的運行環境版本：" + props.getProperty("java.version"));		System.out.println("Java的運行環境供應商：" + props.getProperty("java.vendor"));		System.out.println("Java供應商的URL：" + props.getProperty("java.vendor.url"));		System.out.println("Java的安裝路徑：" + props.getProperty("java.home"));		System.out.println("Java的虛擬機規范版本：" + props.getProperty("java.vm.specification.version"));		System.out.println("Java的虛擬機規范供應商：" + props.getProperty("java.vm.specification.vendor"));		System.out.println("Java的虛擬機規范名稱：" + props.getProperty("java.vm.specification.name"));		System.out.println("Java的虛擬機實現版本：" + props.getProperty("java.vm.version"));		System.out.println("Java的虛擬機實現供應商：" + props.getProperty("java.vm.vendor"));		System.out.println("Java的虛擬機實現名稱：" + props.getProperty("java.vm.name"));		System.out.println("Java運行時環境規范版本：" + props.getProperty("java.specification.version"));		System.out.println("Java運行時環境規范供應商：" + props.getProperty("java.specification.vender"));		System.out.println("Java運行時環境規范名稱：" + props.getProperty("java.specification.name"));		System.out.println("Java的類格式版本號：" + props.getProperty("java.class.version"));		System.out.println("Java的類路徑：" + props.getProperty("java.class.path"));		System.out.println("加載庫時搜索的路徑列表：" + props.getProperty("java.library.path"));		System.out.println("默認的臨時文件路徑：" + props.getProperty("java.io.tmpdir"));		System.out.println("一個或多個擴展目錄的路徑：" + props.getProperty("java.ext.dirs"));		System.out.println("操作系統的名稱：" + props.getProperty("os.name"));		System.out.println("操作系統的構架：" + props.getProperty("os.arch"));		System.out.println("操作系統的版本：" + props.getProperty("os.version"));		System.out.println("文件分隔符：" + props.getProperty("file.separator"));		//在 unix 系統中是＂／＂		System.out.println("路徑分隔符：" + props.getProperty("path.separator"));		//在 unix 系統中是＂:＂		System.out.println("行分隔符：" + props.getProperty("line.separator"));		//在 unix 系統中是＂/n＂		System.out.println("用戶的賬戶名稱：" + props.getProperty("user.name"));		System.out.println("用戶的主目錄：" + props.getProperty("user.home"));		System.out.println("用戶的當前工作目錄：" + props.getProperty("user.dir"));	}	public static void main(String[] args) {		getConfig();		Config();		all();	}}