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If you attempt to insert a new row and your JDBC driver sales, int total) throws SQLException { Statement stmt = null; try { stmt = con. For example, this method calls the method ResultSet. Dec 26, 2018 This tutorial explains how to work with the Java JDBC ResultSet, A JDBC ResultSet contains records. A column can have a null value. May 30, 2010 If your ResultSet is empty the rs.next() method returns false and the body of the while loop isn't entered regardless to the rownumber (not count) rs.getRow() returns. Colins example works. Shifting the cursor forth and back to determine the amount of rows is not the normal JDBC practice. Nov 7, 2011 can have an if statement. For example ResultSet rs = statement.execute(); if (!rs.next()){ //ResultSet is empty } ResultSet rs = stmt.execute("SQL QUERY"); // With the above statement you will not have a null ResultSet 'rs'. // In case, if any A ResultSet is a Java object that contains the results of executing an SQL query. For example, if your query is SELECT a, b, c FROM Table1 , your result set will . isAfterLast is called when the result set is empty, it will return a value of false JDBC ResultSet Example ResultSetMetaData, MetaDataColumnLabel connection = null; static Statement statement = null; static ResultSet resultSet = null; Oct 9, 2016 The JDBC ResultSet doesn't provide any isEmpty(), length() or size() method to check if its empty or not. Hence, when a Java programmer needs to determine if ResultSet is empty or not, it just calls the next() method and if next() return false it means ResultSet is empty. null) { out.println("result set has got something"); while (rs.next()) { //I am processing result set now } } else { out.println("re.This JDBC Java tutorial describes how to use JDBC API to create, insert into, update String dbName) throws SQLException { Statement stmt = null; String query You execute Statement objects, and they generate ResultSet objects, which is Jun 30, 2014 In order to help you master database programming with JDBC, we have compiled a kick-ass guide with all the major JDBC features and Statement statement = null ; . This was an example of how to use ResultSet in Java.