Java 18 reached general availability on 22 March 2022, download Java 18 here. Java 18 has 9 JEP items. 1. JEP 400: UTF-8 by Default 2. JEP 408: Simple Web Server 3. JEP 413: Code Snippets in Java API Documentation 4. JEP 416: Reimplement Core Reflection with Method Handles 5. JEP 417: Vector API (Third […]
This article shows you how to add, check and remove the byte order mark (BOM) from a UTF-8 file. The UTF-8 representation of the BOM is the byte sequence 0xEF, 0xBB, 0xBF (hexadecimal), at the beginning of the file. 1. Add BOM to a UTF-8 file 2. Check if a file contains UTF-8 BOM 3. […]
Note Since Java 8, the JDK built-in Apache Xerces XML parser has been improved a lot, and the majority of the IO classes now default to UTF-8. We cannot simulate the same error anymore, and the internal Xerces APIs are now printing ? for unknown characters instead of showing the error Invalid byte 1 of […]
This article shows how to use the SAX parser to read or parse a UTF-8 XML file. Table of contents 1. SAX parser to parse a UTF-8 XML file. 2. Character Encoding in XML and code 3. SAX common errors 3.1 Invalid byte 1 of 1-byte UTF-8 sequence 3.2 Content is not allowed in prolog […]
In Java, the InputStreamReader accepts a charset to decode the byte streams into character streams. We can pass a StandardCharsets.UTF_8 into the InputStreamReader constructor to read data from a UTF-8 file. import java.nio.charset.StandardCharsets; //… try (FileInputStream fis = new FileInputStream(file); InputStreamReader isr = new InputStreamReader(fis, StandardCharsets.UTF_8); BufferedReader reader = new BufferedReader(isr) ) { String str; […]
In Java, the OutputStreamWriter accepts a charset to encode the character streams into byte streams. We can pass a StandardCharsets.UTF_8 into the OutputStreamWriter constructor to write data to a UTF-8 file. try (FileOutputStream fos = new FileOutputStream(file); OutputStreamWriter osw = new OutputStreamWriter(fos, StandardCharsets.UTF_8); BufferedWriter writer = new BufferedWriter(osw)) { writer.append(line); } In Java 7+, many […]
In Java, we can use str.getBytes(StandardCharsets.UTF_8) to convert a String into a byte[]. String str = "This is a String"; // default charset, a bit dangerous byte[] output1 = str.getBytes(); // in old days, before java 1.7 byte[] output2 = str.getBytes(Charset.forName("UTF-8")); // the best , java 1.7+ , new class StandardCharsets byte[] output3 = str.getBytes(StandardCharsets.UTF_8); […]