zhyunk · April 10, 2023 13:47
diff --git a/Main.java b/Main.java
 import java.io.BufferedWriter;
 import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;

 // 23.04.10 
 // 김지현
 public class Main {
    final String FILE_NAME = "property.html";
    final String PAGE_TITLE = "자바 환경정보";
    final String COLUMN_TITLE1 = "키";
    final String COLUMN_TITLE2 = "값";

    StringBuffer sb = new StringBuffer();

    public static void main(String[] args) {
        new Main().makeHtmlFile();
    }

    // HTML 파일 생성
    private void makeHtmlFile() {
        if (sb == null) sb = new StringBuffer();

        makeHtmlHeader();
        makeHtmlBody();
        makeHtmlFooter();

        try {
            File file = new File(FILE_NAME);
            BufferedWriter writer = new BufferedWriter(new FileWriter(file));

            writer.write(sb.toString());

            writer.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    // HTML Header 작성
    private void makeHtmlHeader() {
        sb.append("<!doctype html>                                      \n");
        sb.append("<html>                                               \n");
        sb.append("<head>                                               \n");
        sb.append("  <meta charset=\"utf-8\">                           \n");
        sb.append("  <title>");
        sb.append(PAGE_TITLE);
        sb.append("</title>                                             \n");
        sb.append("  <style>                                            \n");
        sb.append("    table { border-collapse: collapse; width: 100%; }\n");
        sb.append("    th, td { border: solid 1px #000; }               \n");
        sb.append("  </style>                                           \n");
        sb.append("</head>                                              \n");
        sb.append("<body>                                               \n");
    }
    
    // HTML Body 작성
    private void makeHtmlBody() {
        sb.append("  <h1>");
        sb.append(PAGE_TITLE);
        sb.append("</h1>\n");

        makeHtmlTable();
    }
    // HTML Body - Table 작성
    private void makeHtmlTable() {
        sb.append("  <table>                                            \n");
        sb.append("    <thead>                                          \n");
        sb.append("    <tr>                                             \n");
        sb.append("      <th>");
        sb.append(COLUMN_TITLE1);
        sb.append("</th>                                                \n");
        sb.append("      <th>");
        sb.append(COLUMN_TITLE2);
        sb.append("</th>                                                \n");
        sb.append("    </tr>                                            \n");
        sb.append("    </thead>                                         \n");
        sb.append("    <tbody>                                          \n");

        for (Object k: System.getProperties().keySet()) {
            String key = k.toString();
            String value = System.getProperty(key);

            sb.append("<tr>");
            sb.append(" <td>");
            sb.append(key);
            sb.append("</td>");
            sb.append(" <td>");
            sb.append(value);
            sb.append("</td>");
            sb.append("</tr>\n");
        }

        sb.append("     </tbody>\n");
        sb.append("    </table> \n");
    }

    // HTML Footer 작성
    private void makeHtmlFooter() {
        sb.append("</body>                                              \n");
        sb.append("</html>                                              \n");
    }
 }
	import java.io.BufferedWriter;
	import java.io.File;
	import java.io.FileWriter;
	import java.io.IOException;

	// 23.04.10
	// 김지현
	public class Main {
	final String FILE_NAME = "property.html";
	final String PAGE_TITLE = "자바 환경정보";
	final String COLUMN_TITLE1 = "키";
	final String COLUMN_TITLE2 = "값";

	StringBuffer sb = new StringBuffer();

	public static void main(String[] args) {
	new Main().makeHtmlFile();
	}

	// HTML 파일 생성
	private void makeHtmlFile() {
	if (sb == null) sb = new StringBuffer();

	makeHtmlHeader();
	makeHtmlBody();
	makeHtmlFooter();

	try {
	File file = new File(FILE_NAME);
	BufferedWriter writer = new BufferedWriter(new FileWriter(file));

	writer.write(sb.toString());

	writer.close();
	} catch (IOException e) {
	e.printStackTrace();
	}
	}

	// HTML Header 작성
	private void makeHtmlHeader() {
	sb.append("<!doctype html> \n");
	sb.append("<html> \n");
	sb.append("<head> \n");
	sb.append(" <meta charset=\"utf-8\"> \n");
	sb.append(" <title>");
	sb.append(PAGE_TITLE);
	sb.append("</title> \n");
	sb.append(" <style> \n");
	sb.append(" table { border-collapse: collapse; width: 100%; }\n");
	sb.append(" th, td { border: solid 1px #000; } \n");
	sb.append(" </style> \n");
	sb.append("</head> \n");
	sb.append("<body> \n");
	}

	// HTML Body 작성
	private void makeHtmlBody() {
	sb.append(" <h1>");
	sb.append(PAGE_TITLE);
	sb.append("</h1>\n");

	makeHtmlTable();
	}
	// HTML Body - Table 작성
	private void makeHtmlTable() {
	sb.append(" <table> \n");
	sb.append(" <thead> \n");
	sb.append(" <tr> \n");
	sb.append(" <th>");
	sb.append(COLUMN_TITLE1);
	sb.append("</th> \n");
	sb.append(" <th>");
	sb.append(COLUMN_TITLE2);
	sb.append("</th> \n");
	sb.append(" </tr> \n");
	sb.append(" </thead> \n");
	sb.append(" <tbody> \n");

	for (Object k: System.getProperties().keySet()) {
	String key = k.toString();
	String value = System.getProperty(key);

	sb.append("<tr>");
	sb.append(" <td>");
	sb.append(key);
	sb.append("</td>");
	sb.append(" <td>");
	sb.append(value);
	sb.append("</td>");
	sb.append("</tr>\n");
	}

	sb.append(" </tbody>\n");
	sb.append(" </table> \n");
	}

	// HTML Footer 작성
	private void makeHtmlFooter() {
	sb.append("</body> \n");
	sb.append("</html> \n");
	}
	}