diff --git a/src/main/java/EmployeeData.java b/src/main/java/EmployeeData.java
index 675d6ae..3187f7f 100644
--- a/src/main/java/EmployeeData.java
+++ b/src/main/java/EmployeeData.java
@@ -1,5 +1,5 @@
-
-	public class EmployeeData {
+public class EmployeeData extends BaseData {
+		
 		private String idEmployee;
 	    private String nmEmployee;
 	    private String knEmployee;
@@ -8,81 +8,61 @@
 	    private String idDepartment;
 	    
 	    
+	    
+	    private static int empCount = 0;
+	    
+	    
+	    
+	    
+	    
+	    
 
 
-
-       public String getIdEmployee() {
+	    public String getIdEmployee() {
 			return idEmployee;
 		}
 
-
-
-
-
-		public void setIdEmployee(String idEmployee) {
+	    public void setIdEmployee(String idEmployee) {
+	    		if (idEmployee == null || idEmployee == " " ||idEmployee == "　" || idEmployee.isEmpty()) {
+	            System.out.println("社員IDが空のため設定できませんでした");
+	            return;
+	    	}
 			this.idEmployee = idEmployee;
 		}
-
-
-
-
-
+		
 		public String getNmEmployee() {
 			return nmEmployee;
 		}
 
 
-
-
-
 		public void setNmEmployee(String nmEmployee) {
+			if (nmEmployee == null || nmEmployee == " " || nmEmployee == "　" || nmEmployee.isEmpty()){
+	            System.out.println("社員名が空のため設定できませんでした");
+	            return;
+			}
 			this.nmEmployee = nmEmployee;
 		}
 
-
-
-
-
 		public String getKnEmployee() {
 			return knEmployee;
 		}
 
-
-
-
-
 		public void setKnEmployee(String knEmployee) {
 			this.knEmployee = knEmployee;
 		}
 
-
-
-
-
 		public String getMailAddress() {
 			return mailAddress;
 		}
 
-
-
-
-
 		public void setMailAddress(String mailAddress) {
 			this.mailAddress = mailAddress;
 		}
 
-
-
-
-
 		public String getPassword() {
 			return password;
 		}
 
-
-
-
-
 		public void setPassword(String password) {
 			this.password = password;
 		}
@@ -92,6 +72,7 @@
 
 
 		public String getIdDepartment() {
+			
 			return idDepartment;
 		}
 
@@ -102,8 +83,22 @@
 		public void setIdDepartment(String idDepartment) {
 			this.idDepartment = idDepartment;
 		}
-
-
+		
+		
+		public boolean isMatchId(String id) {
+			
+			
+			
+		    if (this.idEmployee != null && this.idEmployee.equals(id)) {
+		        return true; 
+		    } else {
+		        return false;
+		    }
+		}
+		
+		public void showInfo() {
+	        System.out.println(this.toString());
+	    }
 
 
 		@Override
@@ -113,14 +108,35 @@
        }
 	   
 	   public EmployeeData() {
+		   empCount++;
 	    }
 	   public EmployeeData(String idEmployee, String nmEmployee, String knEmployee,String mailAddress, String password, String idDepartment) {
-		   setIdEmployee(idEmployee);
-		   setNmEmployee(nmEmployee);
-		   setKnEmployee(knEmployee);
-		   setMailAddress(mailAddress);
-		   setPassword(password);
-		   setIdDepartment(idDepartment);
+		   this.setIdEmployee(idEmployee);
+	       this.setNmEmployee(nmEmployee);
+	       this.setKnEmployee(knEmployee);
+	       this.setMailAddress(mailAddress);
+	       this.setPassword(password);
+	       this.setIdDepartment(idDepartment);
+		   empCount++;
 	   }
 	   
+	   
+	   
+	   static int getEmpCount() {
+			return empCount;
+		}
+	   
+	   
+	   @Override
+	   public String toCSV() {
+		   return getIdEmployee() + "," + getNmEmployee() + "," + getKnEmployee() + "," + getMailAddress() + "," + getPassword() + "," + getIdDepartment();
+		   
+	   }
+	   
+	   @Override
+	   public String getPrimaryKeyValue(){
+		   return this.idEmployee;
+	   }
+	   
+	   
 }
\ No newline at end of file
diff --git a/src/main/java/Main.java b/src/main/java/Main.java
index 9843e43..614e465 100644
--- a/src/main/java/Main.java
+++ b/src/main/java/Main.java
@@ -1,9 +1,11 @@
+import java.util.Scanner;
 
 public class Main {
 
 	public static void main(String[] args) {
 		// TODO 自動生成されたメソッド・スタブ
-		EmployeeData[] employees = new EmployeeData[5];
+		BaseData[] employees = new BaseData[5];
+		
 		
 		employees[0] = new EmployeeData("10000", "山田龍也", "ヤマダタツヤ", "yamada@hoge.jp", "aaa", "10");
 		employees[1] = new EmployeeData("10001", "高橋準", "タカハシジュン", "jtaka@hoge.jp", "bbb", "10");
@@ -12,9 +14,59 @@ public class Main {
 		employees[4] = new EmployeeData("10004", "三宅武", "ミヤケタケシ", "miya@hoge.jp", "eee", "13");
 		
 	     for (int i = 0; i < employees.length; i++) {
-	    	 	System.out.println(employees[i]);
+	    	 
+	    	 	//System.out.println(employees[i]);
 		
 	     	}
+	    
+	     System.out.println("現在のデータ件数："+EmployeeData.getEmpCount()+"件");
+	     
+	     
+	     while (true) {
+	    	 
+	    	
+	  
+	     
+	     //Scannerを使って、
+	     Scanner scanner = new Scanner(System.in);
+			//「検索したい社員IDを入力してください」と表示し
+	        System.out.println("検索したい社員IDを入力してください（終了する場合は0）");
+	        //キーボード入力を受け取る
+	        String idEmployee = scanner.next();
+	        
+	        
+	        
+	        if ("0".equals(idEmployee)) {
+	            System.out.println("システムを終了します");
+	            break; 
+	        }
+	        	
+			
+	        //employees配列をfor文で1件ずつ確認し
+	        for(int i = 0; i < employees.length; i++) {
+	        	
+	        	
+	        	
+	        	if (((EmployeeData) employees[i]).isMatchId(idEmployee)) {
+	        		//一致する社員が見つかったら、その社員のshowInfoメソッドを呼び出す
+	        		((EmployeeData) employees[i]).showInfo();
+	        	}
+	        	else {
+	        		//
+	        		System.out.println("検索したいIDが見つかりませんでした");
+	        		break;
+	        	}
+	        	
+	        }
+	        
+	        
+	        
+			
+	     }
+		 
+
+			 //System.out.println(employees[0].toCSV());
+			 //System.out.println(employees[0].getPrimaryKeyValue());
 
 	}