all tasks

Task/Truncate-a-file/Java/truncate-a-file.java

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+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.nio.channels.FileChannel;
+
+public class TruncFile {
+	public static void main(String[] args) throws IOException{
+		if(args.length < 2){
+			System.out.println("Usage: java TruncFile fileName newSize");
+			return;
+		}
+		//turn on "append" so it doesn't clear the file
+		FileChannel outChan = new FileOutputStream(args[0], true).getChannel();
+		long newSize = Long.parseLong(args[1]);
+		outChan.truncate(newSize);
+		outChan.close();
+	}
+}