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check Node.js version using java

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// -------------------------------------------------------- // Program.java file: // -------------------------------------------------------- package com.dirask.examples; import java.io.IOException; public final class Program { public static String main(String[] args) throws IOException { System.out.println(NodeUtils.checkVersion()); // v16.0.0 } } // -------------------------------------------------------- // NodeUtils.java file: // -------------------------------------------------------- package com.dirask.examples; import java.io.IOException; import java.io.InputStream; public final class NodeUtils { private final static Runtime RUNTIME = Runtime.getRuntime(); public static String checkVersion() throws IOException { Process nodeProcess = RUNTIME.exec(new String[] { "node", "-v" }); try { try (InputStream inputStream = nodeProcess.getInputStream()) { String nodeOutput = FileUtils.readText(inputStream); return nodeOutput.trim(); } } catch (IOException ex) { nodeProcess.destroy(); throw ex; } } } // -------------------------------------------------------- // FileUtils.java file: // -------------------------------------------------------- package com.dirask.examples; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.Reader; import java.nio.charset.StandardCharsets; public final class FileUtils { private static final int BLOCK_SIZE = 1024; public static String readText(Reader reader) throws IOException { StringBuilder builder = new StringBuilder(); char[] buffer = new char[BLOCK_SIZE]; while (true) { int count = reader.read(buffer, 0, buffer.length); if (count == -1) { break; } builder.append(buffer, 0, count); } return builder.toString(); } public static String readText(InputStream stream) throws IOException { Reader reader = new InputStreamReader(stream, StandardCharsets.UTF_8); return readText(reader); } }