added logIn and singUpForm methods

.gitignore

@@ -9,3 +9,4 @@
 /db_java.iml
 /.idea/
 /src/dao/DBCode.java
+out/
\ No newline at end of file

src/dao/MemberDaoImpl.java

@@ -27,6 +27,7 @@ public class MemberDaoImpl implements MemberDao {
 		}
 	}
 
+
 	@Override
 	public void insert(MemberDto dto) {
 		String sql = "INSERT INTO mytestdb.major_table (name, major, email) VALUES (?, ?, ?)";
@@ -100,4 +101,64 @@ public class MemberDaoImpl implements MemberDao {
 			e.printStackTrace();
 		}
 	}
+
+	public void insertSignUpForm(String name, String major, String email, String password) {
+		String sql = "INSERT INTO mytestdb.major_table (name, major, email, password) VALUES (?, ?, ?,?)";
+
+		PreparedStatement pstmt = null;
+		try {
+			pstmt = conn.prepareStatement(sql);
+			ResultSet rs = pstmt.executeQuery();
+			while (rs.next()) {
+				if (rs.getString("email").equals(name)) {
+					System.out.println("Email already exists in the database.");
+					break;
+				}
+			}
+			pstmt.setString(1, name);
+			pstmt.setString(2, major);
+			pstmt.setString(3, email);
+			pstmt.setString(4, password);
+
+			int result = pstmt.executeUpdate();
+			if (result == 1) {
+				System.out.println("회원가입 성공!");
+
+			}
+
+		} catch (Exception e) {
+			System.out.println("회원가입 실패!");
+		} finally {
+			try {
+				if (pstmt != null && !pstmt.isClosed()) {
+					pstmt.close();
+				}
+			} catch (Exception e2) {
+			}
+		}
+	}
+	public void logIn (String email, String password){
+		String sql = "SELECT * FROM mytestdb.major_table";
+		PreparedStatement pstmt = null;
+		try {
+			pstmt = conn.prepareStatement(sql);
+			ResultSet rs = pstmt.executeQuery();
+			while (rs.next()) {
+				if (rs.getString("email").equals(email) && rs.getString("password").equals(password)){
+					System.out.println("로그인 성공!");
+				}
+
+			}
+
+		} catch (Exception e) {
+			System.out.println("logIn 메서드 예외발생");
+		} finally {
+			try {
+				if (pstmt != null && !pstmt.isClosed()) {
+					pstmt.close();
+				}
+			} catch (Exception e2) {
+			}
+		}
+	}
 }
\ No newline at end of file

src/member/MainClass.java

 package member;
 
 import java.util.ArrayList;
+import java.util.Scanner;
 
 import dao.MemberDaoImpl;
 import dto.MemberDto;
@@ -22,7 +23,16 @@ public class MainClass {
 		// 데이터 보기
 		System.out.println(memberDao.selectAll());
 		// 데이터 수정
+		System.out.println("1 로 회원가입; 2 로 로그인");
+		Scanner sc = new Scanner(System.in);
+		int num = sc.nextInt();
+		sc.nextLine();
 
+		if (num == 1){
+
+		}else if (num == 2){
+
+		}
 
 	}