Welcome to the AWS Code Examples Repository. This repo contains code examples used in the AWS documentation, AWS SDK Developer Guides, and more. For more information, see the Readme.md file below.
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// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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// snippet-start:[redshift.java.ConnectToCluster.complete]
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package connection;
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import java.sql.*;
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import java.util.Properties;
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public class ConnectToCluster {
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// Redshift driver:
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// "jdbc:redshift://x.y.us-west-2.redshift.amazonaws.com:5439/dev";
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static final String dbURL = "***jdbc cluster connection string ****";
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static final String MasterUsername = "***master user name***";
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static final String MasterUserPassword = "***master user password***";
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public static void main(String[] args) {
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Connection conn = null;
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Statement stmt = null;
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try {
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// Dynamically load driver at runtime.
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// Redshift JDBC 4.1 driver: com.amazon.redshift.jdbc41.Driver
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// Redshift JDBC 4 driver: com.amazon.redshift.jdbc4.Driver
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Class.forName("com.amazon.redshift.jdbc.Driver");
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// Open a connection and define properties.
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System.out.println("Connecting to database...");
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Properties props = new Properties();
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// Uncomment the following line if using a keystore.
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// props.setProperty("ssl", "true");
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props.setProperty("user", MasterUsername);
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props.setProperty("password", MasterUserPassword);
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conn = DriverManager.getConnection(dbURL, props);
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// Try a simple query.
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System.out.println("Listing system tables...");
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stmt = conn.createStatement();
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String sql;
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sql = "select * from information_schema.tables;";
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ResultSet rs = stmt.executeQuery(sql);
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// Get the data from the result set.
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while (rs.next()) {
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// Retrieve two columns.
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String catalog = rs.getString("table_catalog");
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String name = rs.getString("table_name");
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// Display values.
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System.out.print("Catalog: " + catalog);
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System.out.println(", Name: " + name);
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}
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rs.close();
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stmt.close();
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conn.close();
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} catch (Exception ex) {
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// For convenience, handle all errors here.
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ex.printStackTrace();
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} finally {
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// Finally block to close resources.
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try {
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if (stmt != null)
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stmt.close();
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} catch (Exception ex) {
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} // nothing we can do
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try {
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if (conn != null)
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conn.close();
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} catch (Exception ex) {
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ex.printStackTrace();
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}
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}
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System.out.println("Finished connectivity test.");
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}
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}
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// snippet-end:[redshift.java.ConnectToCluster.complete]
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