Example usage for java.lang System setErr

Introduction

In this page you can find the example usage for java.lang System setErr.

Prototype

public static void setErr(PrintStream err)

Source Link

Document

Reassigns the "standard" error output stream.

Usage

From source file:Main.java

public static void main(String[] args) throws Exception {
    System.setErr(new PrintStream(new FileOutputStream("system_err.txt")));

    String nullString = null;/* www . jav a  2  s .c  om*/
    nullString = nullString.toUpperCase();
}

From source file:Main.java

public static void main(String[] args) throws Exception {

    FileOutputStream f = new FileOutputStream("file.txt");

    System.setErr(new PrintStream(f));

    System.err.println("This will get redirected to file from java2s.com");
}

From source file:Main.java

public static void main(String[] argv) throws Exception {
    System.setOut(new LogStream(System.out, new PrintStream(new FileOutputStream("out.log"))));
    System.setErr(new LogStream(System.err, new PrintStream(new FileOutputStream("err.log"))));

    System.out.println("output");
    System.err.println("error");
}

From source file:MainClass.java

public static void main(String[] args) {

    try {//from w w w.j  av a2s. c  o  m
        String FILE = "c:\\systemin.txt";
        FileOutputStream outStr = new FileOutputStream(FILE, true);
        PrintStream printStream = new PrintStream(outStr);

        System.setErr(printStream);

        Timestamp now = new Timestamp(System.currentTimeMillis());
        System.out.println(now.toString() + ": This is text that should go to the file");

        outStr.close();
        printStream.close();
    } catch (FileNotFoundException ex) {
        ex.printStackTrace();
        System.exit(-1);
    } catch (IOException ex) {
        ex.printStackTrace();
        System.exit(-1);
    }
}

From source file:Logging.java

public static void main(String args[]) throws Exception {
    FileOutputStream errors = new FileOutputStream("StdErr.txt", true);
    PrintStream stderr = new PrintStream(errors);
    PrintWriter errLog = new PrintWriter(errors, true);
    System.setErr(stderr);

    String query = "SELECT Name,Description,Qty,Cost,Sell_Price FROM Stock";

    try {/*w  ww  .j a v a 2  s.  c  o  m*/
        Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        Connection con = DriverManager.getConnection("jdbc:odbc:Inventory");
        Statement stmt = con.createStatement();
        ResultSet rs = stmt.executeQuery(query);
        while (rs.next()) {
            String name = rs.getString("Name");
            String desc = rs.getString("Description");
            int qty = rs.getInt("Qty");
            float cost = rs.getFloat("Cost");
        }
    } catch (ClassNotFoundException e) {
        e.printStackTrace(errLog);
    } catch (SQLException e) {
        System.err.println((new GregorianCalendar()).getTime());
        System.err.println("Thread: " + Thread.currentThread());
        System.err.println("ErrorCode: " + e.getErrorCode());
        System.err.println("SQLState:  " + e.getSQLState());
        System.err.println("Message:   " + e.getMessage());
        System.err.println("NextException: " + e.getNextException());
        e.printStackTrace(errLog);
        System.err.println();
    }
    stderr.close();
}

From source file:MainClass.java

public static void main(String[] args) throws IOException {
    PrintStream console = System.out;
    BufferedInputStream in = new BufferedInputStream(new FileInputStream("Redirecting.java"));
    PrintStream out = new PrintStream(new BufferedOutputStream(new FileOutputStream("test.out")));
    System.setIn(in);//from  w  w w . j a v  a  2s. co m
    System.setOut(out);
    System.setErr(out);
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String s;
    while ((s = br.readLine()) != null)
        System.out.println(s);
    out.close();
    System.setOut(console);
}

From source file:Redirect.java

public static void main(String args[]) throws Exception {
    PrintStream origOut = System.out;
    PrintStream origErr = System.err;

    InputStream stdin = null;//from  w ww  .j a  va2s  .c om
    stdin = new FileInputStream("Redirect.in");
    PrintStream stdout = null;
    stdout = new PrintStream(new FileOutputStream("Redirect.out"));
    PrintStream stderr = null;
    stderr = new PrintStream(new FileOutputStream("Redirect.err"));
    origOut.println("1");
    System.out.println("2");
    origOut.println("3");
    System.err.println("4");
    origErr.println("5");

    System.setIn(stdin);
    System.setOut(stdout);
    System.setErr(stderr);

    origOut.println("\nR");
    System.out.println("T");
    origOut.println("Tq");
    System.err.println("Tqw");
    origErr.println("Test");

    origOut.println("\nRedirect:  Round #3");
    int inChar = 0;
    while (-1 != inChar) {
        try {
            inChar = System.in.read();
        } catch (Exception e) {
            // Clean up the output and bail.
            origOut.print("\n");
            break;
        }
        origOut.write(inChar);
    }

    stdin.close();
    stdout.close();
    stderr.close();

    System.exit(0);
}

From source file:Redirecting.java

public static void main(String[] args) throws IOException {
    PrintStream console = System.out;
    BufferedInputStream in = new BufferedInputStream(new FileInputStream("Redirecting.java"));
    PrintStream out = new PrintStream(new BufferedOutputStream(new FileOutputStream("test.out")));
    System.setIn(in);//  w  ww  . ja v a  2 s . c  om
    System.setOut(out);
    System.setErr(out);
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    String s;
    while ((s = br.readLine()) != null)
        System.out.println(s);
    out.close(); // Remember this!
    System.setOut(console);
}

From source file:com.cisco.cta.taxii.adapter.AdapterRunner.java

/**
 * @param args The command line arguments.
 *///from w ww .  ja  v a  2 s  .  co m
@SuppressFBWarnings(value = "DM_DEFAULT_ENCODING", justification = "DEV-NULL encoding is irrelevant")
public static void main(String[] args) {
    try (PrintStream devNull = new PrintStream(ByteStreams.nullOutputStream())) {
        System.setErr(devNull);
        ctx = new SpringApplicationBuilder(ScheduleConfiguration.class, RunNowConfiguration.class,
                SmokeTestConfiguration.class, RunConfigConfiguration.class).bannerMode(Mode.OFF)
                        .listeners(new ApplicationPidFileWriter()).web(false).run(args);
        ctx.start();

    } catch (Throwable t) {
        errHandler.handle(t);
    }
}

From source file:org.jetbrains.webdemo.executors.JavaExecutor.java

public static void main(String[] args) {
    PrintStream defaultOutputStream = System.out;
    try {/*from  www.  j  a  v  a2  s .  c  o m*/
        System.setOut(new PrintStream(standardOutputStream));
        System.setErr(new PrintStream(errorOutputStream));

        RunOutput outputObj = new RunOutput();
        String className;
        if (args.length > 0) {
            className = args[0];
            try {
                Method mainMethod = Class.forName(className).getMethod("main", String[].class);
                mainMethod.invoke(null, (Object) Arrays.copyOfRange(args, 1, args.length));
            } catch (InvocationTargetException e) {
                outputObj.exception = e.getCause();
            } catch (NoSuchMethodException e) {
                System.err.println("No main method found in project.");
            } catch (ClassNotFoundException e) {
                System.err.println("No main method found in project.");
            }
        } else {
            System.err.println("No main method found in project.");
        }

        System.out.flush();
        System.err.flush();
        System.setOut(defaultOutputStream);
        outputObj.text = outputStream.toString().replaceAll("</errStream><errStream>", "")
                .replaceAll("</outStream><outStream>", "");
        ObjectMapper objectMapper = new ObjectMapper();
        SimpleModule module = new SimpleModule();
        module.addSerializer(Throwable.class, new ThrowableSerializer());
        objectMapper.registerModule(module);
        System.out.print(objectMapper.writeValueAsString(outputObj));
    } catch (Throwable e) {
        System.setOut(defaultOutputStream);
        System.out.println("{\"text\":\"<errStream>" + e.getClass().getName() + ": " + e.getMessage());
        System.out.print("</errStream>\"}");
    }

}