Examples of java.io.PrintWriter.printf()

java.io.PrintWriter.printf()
Prints a formatted string. The behavior of this method is the same as this writer's format(String format, Object... args) method.
The method uses the default for the current JVM instance locale, as if it is specified by the Locale.getDefault() call. @param format A format string. @param args The arguments list. If there are more arguments than those specified by the format string, then the additional arguments are ignored. @return This writer. @throws IllegalFormatException If the format string is illegal or incompatible with the arguments or the arguments are less than those required by the format string or any other illegal situation. @throws NullPointerException If the given format is null.

            int numRows = Integer.parseInt(rowColNonZeroCount[0]);
            int numCols = Integer.parseInt(rowColNonZeroCount[1]);
            int numTotalNonZeros = Integer.parseInt(rowColNonZeroCount[2]);


            // Write out the header for the new matrix file.
            writer.printf("%d %d %d\n", numRows, numCols, numTotalNonZeros);


            line = br.readLine();
            // Traverse each column in the matrix.
            for (int col = 0; line != null && col < numCols; ++col) {
                int numNonZeros = Integer.parseInt(line);

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            line = br.readLine();
            // Traverse each column in the matrix.
            for (int col = 0; line != null && col < numCols; ++col) {
                int numNonZeros = Integer.parseInt(line);
                writer.printf("%d\n", numNonZeros);


                // Transform each of the non zero values for the new matrix
                // file.
                for (int index = 0; (line = br.readLine()) != null &&
                                    index < numNonZeros; ++index) {

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                for (int index = 0; (line = br.readLine()) != null &&
                                    index < numNonZeros; ++index) {
                    String[] rowValue = line.split("\\s+");
                    int row = Integer.parseInt(rowValue[0]);
                    double value = Double.parseDouble(rowValue[1]);
                    writer.printf("%d %f\n", row,
                                  transform.transform(row, col, value));
                }
            }


            writer.close();

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                v1 = String.valueOf(e.from());
            String v2 = vertexLabels.lookup(e.to());
            if (v2 == null)
                v2 = String.valueOf(e.to());


            pw.printf("%s\t%s%n", v1, v2);
        }
        pw.close();
    }


    public static DirectedGraph<DirectedEdge> readDirected(File f) throws IOException {

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    public static <T> void writeUndirectedMultigraph(
            Multigraph<T,TypedEdge<T>> g, File f) throws IOException {
        PrintWriter pw = new PrintWriter(f);
        for (TypedEdge<T> e : g.edges()) {
            pw.printf("%d %d %f%n", e.from(), e.to(), e.edgeType());
        }
        pw.close();        
    }


    public static <T> void writeUndirectedMultigraph(

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                DoubleVector row = input.getRowVector(i);
                for (int n : neighborMap.values()) {
                    double edgeWeight = kernelSim.sim(
                            row, input.getRowVector(n));
                    affMatrixWriter.printf("%d %d %f\n", i+1 ,n+1, edgeWeight);
                }
            }


            // Finish writing the affinity matrix so it can be sent to matlab
            affMatrixWriter.close();

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                // If using k-nearest neighbors, once the row has been
                // processed, report all the k-nearest as being adjacent
                // Note that the two rows may not have a symmetric
                // connection so only one value needs to be written
                for (Duple<Integer,Double> t : neighbors.values())
                    affMatrixWriter.printf("%d %d %f\n", row+1, t.x+1, t.y);
            }


            // Finish writing the matrix
            affMatrixWriter.close();
            return new MatrixFile(affMatrixFile, MatrixIO.Format.MATLAB_SPARSE);

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                             motifToZScore.entrySet()) {
                        File dotFile = new File(baseDir, "graph-" + (graphNum++) + ".dot");
                        dio.writeDirectedMultigraph(e.getKey(), dotFile, edgeColors);
                        String imgFile = dotFile.getName();
                        imgFile = imgFile.substring(0, imgFile.length() - 3) + "gif";
                        imgScript.printf("dot -Tgif %s -o %s%n", dotFile.getName(), imgFile);
                        int count = e.getValue().count;
                        double zScore = e.getValue().statistic;
                        double mean = e.getValue().meanCountInNullModel;
                        double stddev = e.getValue().stddevInNullModel;
                        pw.printf("  <tr><td><img src=\"%s\"></td><td>%d</td><td>%f</td><td>%f</td><td>%f</td></tr>%n",

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                             motifToZScore.entrySet()) {
                        File dotFile = new File(baseDir, "graph-" + (graphNum++) + ".dot");
                        dio.writeUndirectedMultigraph(e.getKey(), dotFile, edgeColors);
                        String imgFile = dotFile.getName();
                        imgFile = imgFile.substring(0, imgFile.length() - 3) + "gif";
                        imgScript.printf("dot -Tgif %s -o %s%n", dotFile.getName(), imgFile);
                        int count = e.getValue().count;
                        double zScore = e.getValue().statistic;
                        double mean = e.getValue().meanCountInNullModel;
                        double stddev = e.getValue().stddevInNullModel;
                        pw.printf("  <tr><td><img src=\"%s\"></td><td>%d</td><td>%f</td><td>%f</td><td>%f</td></tr>%n",

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    public static <T> void writeUndirectedMultigraph(
            Multigraph<T,TypedEdge<T>> g, File f, 
            Indexer<String> vertexLabels) throws IOException {
        PrintWriter pw = new PrintWriter(f);
        for (TypedEdge<T> e : g.edges()) {
            pw.printf("%d %d %f%n", vertexLabels.lookup(e.from()),
                      vertexLabels.lookup(e.to()), e.edgeType());
        }
        pw.close();        
    }

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