Print the data in ResultSet along with column names

I am retrieving columns names from a SQL database through Java. I know I can retrieve columns names from ResultSet too. So I have this sql query

 select column_name from information_schema.columns where table_name='suppliers'

The problem is I don't know how can I get columns names from ResultSet and my code is

public void getAllColumnNames() throws Exception{

String sql = "SELECT column_name from information_schema.columns where table_name='suppliers'";

PreparedStatement ps = connection.prepareStatement(sql);
ResultSet rs = ps.executeQuery(sql);
 // extract values from rs


}

Solution 1:

ResultSet resultSet = statement.executeQuery("SELECT * from foo");
ResultSetMetaData rsmd = resultSet.getMetaData();
int columnsNumber = rsmd.getColumnCount();
while (resultSet.next()) {
    for (int i = 1; i <= columnsNumber; i++) {
        if (i > 1) System.out.print(",  ");
        String columnValue = resultSet.getString(i);
        System.out.print(columnValue + " " + rsmd.getColumnName(i));
    }
    System.out.println("");
}

Reference : Printing the result of ResultSet

Solution 2:

1) Instead of PreparedStatement use Statement

2) After executing query in ResultSet, extract values with the help of rs.getString() as :

Statement st=cn.createStatement();
ResultSet rs=st.executeQuery(sql);
while(rs.next())
{
    rs.getString(1); //or rs.getString("column name");
}