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How to get JDBC Connection object using properties file?


Below example shows how to get connection object using properties file.

package com.java2novice.jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;

public class MyConnWithProperties {

	public static void main(String a[]){
		System.setProperty("Jdbc.drivers", "oracle.jdbc.driver.OracleDriver");
		Properties prop = new Properties();
		prop.put("user", "user-name");
		prop.put("password", "password");
		try {
			Connection con = DriverManager
				.getConnection("jdbc:oracle:thin:@<hostname>:<port num>:<DB name>", prop);
			System.out.println("Got Connection Object");
		} catch (SQLException e) {
			// TODO Auto-generated catch block
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Interface and its usage
Interface is similar to a class which may contain method's signature only but not bodies and it is a formal set of method and constant declarations that must be defined by the class that implements it. Interfaces are useful for declaring methods that one or more classes are expected to implement, capturing similarities between unrelated classes without forcing a class relationship and determining an object's programming interface without revealing the actual body of the class.
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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java is registered trademark of Oracle.
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