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Modified Construct.java #1

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158 changes: 90 additions & 68 deletions Construct.java
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Original file line number Diff line number Diff line change
@@ -1,82 +1,104 @@
import java.sql.*;
import java.sql.SQLException;
import java.util.*;
import java.io.*;
public class Construct {
public static void main(String args[])
{
Scanner sc=new Scanner(System.in);
/*
use BufferedReader instead of Scanner because , here inputs are space separated(full name , address)
and scanner only scans tokens(i.e. until it finds a " ")
*/
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
PreparedStatement pstmt;
try
{
Class.forName("com.mysql.jdbc.Driver");
Connection conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root");
System.out.println("Success");
Statement stmt=conn.createStatement();
ResultSet rs=stmt.executeQuery("select * from employee");
System.out.println("Do you want appliation form if yes enter 1 if no enter 0:");
int ch=sc.nextInt();
String name,eid,adr;
int pno,exp;
while(ch>0)
{
System.out.println("\tApplication form");
System.out.println("Name:");
name=sc.next();
System.out.println("address:");
adr=sc.next();
System.out.println("phone no:");
pno=sc.nextInt();
System.out.println("email id:");
eid=sc.next();
System.out.println("experience:");
exp=sc.nextInt();
pstmt=conn.prepareStatement("insert into employee (name,address,phoneno,email,experience) values(?,?,?,?,?)");
pstmt.setString(1, name);
pstmt.setString(2, adr);
pstmt.setInt(3, pno);
pstmt.setString(4, eid);
pstmt.setInt(5, exp);
pstmt.executeUpdate();
System.out.println("Do you want appliation form if yes enter 1 if no enter 0:");
ch=sc.nextInt();
}
int flag1=1,c;
System.out.println("Do you want to search by employee id if no enter 0 if yes enter 1");
c=sc.nextInt();
if(c>0)
Connection conn = null;
Statement stmt = null;
ResultSet rs = null;
try {
Class.forName("com.mysql.jdbc.Driver");
Connection conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/test","root","root");
System.out.println("Success");
stmt=conn.createStatement();
rs=stmt.executeQuery("select * from employee");
System.out.println("Do you want appliation form if yes enter 1 if no enter 0:");
int ch = Integer.parseInt(br.readLine());
String name,eid,adr;
int exp;
long pno;
while(ch>0)
{
System.out.println("\tApplication form");
System.out.println("Name:");
name = br.readLine();
System.out.println("address:");
adr = br.readline();
System.out.println("phone no:");
pno = Long.parseLong(br.readLine());
System.out.println("email id:");
eid = br.readLine();
System.out.println("experience:");
exp=Integer.parseInt(br.readLine());
pstmt=conn.prepareStatement("insert into employee (name,address,phoneno,email,experience) values(?,?,?,?,?)");
pstmt.setString(1, name);
pstmt.setString(2, adr);
pstmt.setLong(3, pno); // look out for int range, can't handle 10 digit phone number
pstmt.setString(4, eid);
pstmt.setInt(5, exp);
pstmt.executeUpdate();
System.out.println("Do you want appliation form if yes enter 1 if no enter 0:");
ch=Integer.parseInt(br.readLine());
}
int flag1=1,c;
System.out.println("Do you want to search by employee id if no enter 0 if yes enter 1");
c=Integer.parseInt(br.readLine());
if(c>0)
{
System.out.println("Enter empid:");
int n=Integer.parseInt(br.readLine());
System.out.println("empid name address phoneno email experience");
rs=stmt.executeQuery("select * from employee");
int flag=1;
if(flag==1)
{
while(rs.next())
{
if(rs.getInt(1)==n)
{
System.out.println(rs.getInt(1)+" "+rs.getString(2)+" "+rs.getString(3)+" "+rs.getLong(4)+" "+rs.getString(5)+" "+rs.getInt(6));
flag=0;
}
}
}
else
{
while(rs.next())
System.out.println(rs.getInt(1)+" "+rs.getString(2)+" "+rs.getString(3)+" "+rs.getInt(4)+" "+rs.getString(5)+" "+rs.getInt(6));
}
flag1=0;
}
else
{
while(rs.next())
System.out.println(rs.getInt(1)+" "+rs.getString(2)+" "+rs.getString(3)+" "+rs.getInt(4)+" "+rs.getString(5)+" "+rs.getInt(6));
}
// always close the jdbc interfaces
close(conn, stmt, rs);
}
catch(Exception e)
{
System.out.println("Enter empid:");
int n=sc.nextInt();
System.out.println("empid name address phoneno email experience");
rs=stmt.executeQuery("select * from employee");
int flag=1;
if(flag==1)
{
while(rs.next())
{
if(rs.getInt(1)==n)
{
System.out.println(rs.getInt(1)+" "+rs.getString(2)+" "+rs.getString(3)+" "+rs.getInt(4)+" "+rs.getString(5)+" "+rs.getInt(6));
flag=0;
}
}
}
else
{
while(rs.next())
System.out.println(rs.getInt(1)+" "+rs.getString(2)+" "+rs.getString(3)+" "+rs.getInt(4)+" "+rs.getString(5)+" "+rs.getInt(6));
}
flag1=0;
e.printStackTrace();
}
else
{
while(rs.next())
System.out.println(rs.getInt(1)+" "+rs.getString(2)+" "+rs.getString(3)+" "+rs.getInt(4)+" "+rs.getString(5)+" "+rs.getInt(6));
}
private static void close(Connection conn, Statement stmt, ResultSet rs) throws SQLException {

if (rs != null) {
rs.close();
}
if (stmt != null) {
stmt.close();
}
catch(Exception e)
{
e.printStackTrace();
if (conn != null) {
conn.close();
}
}
}