import java.sql.*;

private static final String url = "jdbc:mysql://localhost/learn";

private static final String user = "root";

private static final String password = "B!SHu12345";

public static void main(String args[]) {
    try {
    Class.forName("com.mysql.jdbc.Driver");
        Connection con = DriverManager.getConnection(url, user, password);
    Statement st=con.createStatement();
    ResultSet rs=st.executeQuery("select * from bishu where id =101");
    while(rs.next()){
        String s=rs.getString("id");
        System.out.println(s);
    }
        System.out.println("Success");

    } catch (Exception e) {
        e.printStackTrace();
   System.out.println(e.getMessage());
    }
}

java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:195)
at JDBCTest.main(first.java:14)