{"id":410,"date":"2013-12-09T12:28:56","date_gmt":"2013-12-09T12:28:56","guid":{"rendered":"http:\/\/codethataint.com\/blog\/?p=410"},"modified":"2013-12-09T12:40:04","modified_gmt":"2013-12-09T12:40:04","slug":"java-code-snippets","status":"publish","type":"post","link":"https:\/\/codethataint.com\/blog\/java-code-snippets\/","title":{"rendered":"Java Code Snippets"},"content":{"rendered":"<p><strong>How to get Total Columns Returned by Query<\/strong><\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">\r\n ResultSet rs = stmt.executeQuery(strSQL);\r\n ResultSetMetaData rsmd = rs.getMetaData();\r\n int columnsNumber = rsmd.getColumnCount();\r\n<\/pre>\n<p><strong>How to get Column Name from Query<\/strong><\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">\r\n ResultSet rs = stmt.executeQuery(&quot;SELECT a, b, c FROM TABLE2&quot;);\r\n ResultSetMetaData rsmd = rs.getMetaData();\r\n String name = rsmd.getColumnName(1);\r\n<\/pre>\n<p><strong>How to get Column Count from Query and Loop Through That<\/strong><\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">\r\nResultSet rs = stmt.executeQuery(&quot;SELECT a, b, c FROM TABLE2&quot;);\r\nResultSetMetaData rsmd = rs.getMetaData();\r\nint columnCount = rsmd.getColumnCount();\r\n\r\n\/\/ The column count starts from 1\r\nfor (int i = 1; i &lt; columnCount + 1; i++ ) {\r\n  String name = rsmd.getColumnName(i);\r\n  \/\/ Do stuff with name\r\n}\r\n<\/pre>\n<p><strong>To Find a Column with particular Name<\/strong><\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">\r\n ResultSet rs = stmt.executeQuery(&quot;SELECT a, b, c FROM TABLE2&quot;);\r\n rs.getString(rs.findColumn(&quot;fullname&quot;));\r\n<\/pre>\n<p><strong>How to get List of Column Names from Query and Store it in a Array<\/strong><\/p>\n<pre class=\"brush: java; title: ; notranslate\" title=\"\">\r\n ResultSetMetaData meta = resultset.getMetaData();  \r\n Integer columncount = meta.getColumnCount();\r\n int count = 1 ; \r\n String&#x5B;] columnNames = null;\r\n\r\n while(columncount &lt;=count)\r\n  columnNames &#x5B;i] = meta.getColumnName(i);\r\n\r\n System.out.println (columnNames.size());\r\n<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>How to get Total Columns Returned by Query ResultSet rs = stmt.executeQuery(strSQL); ResultSetMetaData rsmd = rs.getMetaData(); int columnsNumber = rsmd.getColumnCount(); How to get Column Name from Query ResultSet rs = stmt.executeQuery(&quot;SELECT a, b, c FROM TABLE2&quot;); ResultSetMetaData rsmd = rs.getMetaData(); String name = rsmd.getColumnName(1); How to get Column Count from Query and Loop Through That&hellip; <a href=\"https:\/\/codethataint.com\/blog\/java-code-snippets\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[65],"tags":[],"class_list":["post-410","post","type-post","status-publish","format-standard","hentry","category-codesnippet"],"_links":{"self":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/410","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/comments?post=410"}],"version-history":[{"count":5,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/410\/revisions"}],"predecessor-version":[{"id":415,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/posts\/410\/revisions\/415"}],"wp:attachment":[{"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/media?parent=410"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/categories?post=410"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/codethataint.com\/blog\/wp-json\/wp\/v2\/tags?post=410"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}