public class JDBCTest {
public static void main(String[] args) {
String sql = "SELECT * FROM usertest";
Connection conn = null;
Statement st = null;
ResultSet rs = null;
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/wzz","root","1020");
st = conn.createStatement();
rs = st.executeQuery(sql);
while(rs.next()){
System.out.println(rs.getString("name")+rs.getInt("age"));
}
} catch (Exception e) {
e.printStackTrace();
}finally{
try {
rs.close();
} catch (Exception e2) {
}
try {
st.close();
} catch (Exception e3) {
}
try {
conn.close();
} catch (Exception e4) {
}
}
}
}
public class JDBCTest {
public static Connection getConnection() {
Connection conn = null;
try {
Class.forName("com.mysql.jdbc.Driver");
conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/wzz","root","1020");
} catch (Exception e) {
e.printStackTrace();
}
return conn;
}
public static void main(String[] args) {
Connection conn = getConnection();
Statement st = null;
try {
String sql="insert into usertest(name,age) values(‘abc‘,18)";
st = conn.createStatement();
int count = st.executeUpdate(sql);
System.out.println(count);
} catch (Exception e) {
e.printStackTrace();
}finally{
try {
st.close();
} catch (Exception e1) {
}
try {
conn.close();
} catch (Exception e2) {
}
}
}
}
原文：http://www.cnblogs.com/wzz1020/p/4676372.html