Yash-777 opened a new pull request #393: Replace String URL: https://github.com/apache/commons-lang/pull/393 Replace String with the String which is nested in between two Strings. I have used this Method in order to generate dynamic HTML reports to send a mail. ```java public class Test { public static void main(String[] args) throws Exception { String data = new String(Files.readAllBytes(Paths.get("./dynamicReport.html"))); String rowSaperator = "<!-- [$$ListRow$$] -->"; String rowDataSaperator = "[~$List$~]"; List<String[]> dynamicRecords = new ArrayList<>(); dynamicRecords.add( new String[]{ "1", "1" } ); dynamicRecords.add( new String[]{ "1", "1" } ); dynamicRecords.add( new String[]{ "2", "1" } ); dynamicRecords.add( new String[]{ "1", "2" } ); String finalTableData = dynamicRecordData(data, rowSaperator, rowDataSaperator, dynamicRecords); String targetFilePath = "D:/dynamicReport.txt"; try (PrintWriter out = new PrintWriter( targetFilePath )) { out.println( finalTableData ); } } public static String dynamicRecordData(String str, String rowSaperator, String rowDataSaperator, List<String[]> dynamicRecords) throws Exception { if( str.length() <= ( (rowSaperator.length())*2 + rowDataSaperator.length()) ) { return str; } String substringBetween = StringUtils.substringBetween(str, rowSaperator, rowSaperator); if( substringBetween == null) { return str; } int countMatches = StringUtils.countMatches(substringBetween, rowDataSaperator); if( str.length() <= ( (rowSaperator.length())*2 + (rowDataSaperator.length())*countMatches ) ) { return str; } StringBuffer dynamicRowData = new StringBuffer(); String[] searchList = null; for (String[] dynamicRecord : dynamicRecords) { if( dynamicRecord.length == countMatches ) { if( searchList == null ) { searchList = new String[countMatches]; for (int i = 0; i < countMatches; i++) { searchList[i] = rowDataSaperator; } } String replaceEach = StringUtils.replaceEach(substringBetween, searchList, dynamicRecord); dynamicRowData.append(replaceEach); } else { throw new Exception("Records mismatch."); } } String finalTableData = TabularData_from_List.replaceSubstringInBetween(str, dynamicRowData.toString(), rowSaperator, rowSaperator); return finalTableData; } } ``` Sample HTML Template. Where i my case there are to many dynamic tables with provided list data to replace. ```html <table> <tbody> <tr><td>Header1</td><td>Header2</td> <!-- [$$ListRow$$] --> <tr><td>[~$List$~]</td><td>[~$List$~]</td> <!-- [$$ListRow$$] --> </tbody> </table> ``` After code generated report. ```html <table> <tbody> <tr><td>Header1</td><td>Header2</td> <!-- [$$ListRow$$] --> <tr><td>1</td><td>1</td> <tr><td>1</td><td>1</td> <tr><td>2</td><td>2</td> <tr><td>1</td><td>1</td> <!-- [$$ListRow$$] --> </tbody> </table> ```
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