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.

        pw.println("graph g {");
        String vertexLabel = null;
        for (int v : g.vertices()) {
            pw.print("\t" + v);
            if (vertexLabels != null && (vertexLabel = vertexLabels.get(v)) != null) {
                pw.printf(" [label=\"%s\"]", vertexLabel);
            }
            pw.println(';');
        }
        for (Edge e : g.edges()) {
            pw.printf("\t%d -- %d\n", e.from(), e.to());

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                pw.printf(" [label=\"%s\"]", vertexLabel);
            }
            pw.println(';');
        }
        for (Edge e : g.edges()) {
            pw.printf("\t%d -- %d\n", e.from(), e.to());
        }
        pw.println("}");
        pw.close();
    }

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        pw.println("digraph g {");
        String vertexLabel = null;
        for (int v : g.vertices()) {
            pw.print("\t" + v);
            if (vertexLabels != null && (vertexLabel = vertexLabels.get(v)) != null) {
                pw.printf(" [label=\"%s\"]", vertexLabel);
            }
            pw.println(';');
        }
        for (DirectedEdge e : g.edges()) {
            pw.printf("\t%d -> %d\n", e.from(), e.to());

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                pw.printf(" [label=\"%s\"]", vertexLabel);
            }
            pw.println(';');
        }
        for (DirectedEdge e : g.edges()) {
            pw.printf("\t%d -> %d\n", e.from(), e.to());
        }
        if (!groups.isEmpty()) {
            for (Set<Integer> group : groups) {
                pw.print("\t{ rank=same; ");
                for (Integer i : group) {

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      OutputStream to = new FileOutputStream(filepath);
      writeScreenShot(to);
      to.close();
    } catch(FileNotFoundException e){
      PrintWriter stdErr = this.parent.getCallBackEnv().getRascalContext().getStdErr();
      stdErr.printf("Could not write to " + filepath + "\n Reason " + e.getMessage());
    } catch (IOException e) {
      PrintWriter stdErr = this.parent.getCallBackEnv().getRascalContext().getStdErr();
      stdErr.printf("Could not write to " + filepath + "\n Reason " + e.getMessage());
    }
  }

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    } catch(FileNotFoundException e){
      PrintWriter stdErr = this.parent.getCallBackEnv().getRascalContext().getStdErr();
      stdErr.printf("Could not write to " + filepath + "\n Reason " + e.getMessage());
    } catch (IOException e) {
      PrintWriter stdErr = this.parent.getCallBackEnv().getRascalContext().getStdErr();
      stdErr.printf("Could not write to " + filepath + "\n Reason " + e.getMessage());
    }
  }


  
  public void addSWTElement(Control c) {

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        maxURL = sz;
      nTicks += e.getValue().getTicks();
    }
    PrintWriter out = eval.getStdOut();
    String URLFormat = "%" + maxURL + "s";
    out.printf("PROFILE: %d data points, %d ticks, tick = %d milliSecs\n", data.size(), nTicks, resolution);
    out.printf(URLFormat + "%8s%9s  %s\n", " Source File", "Ticks", "%", "Source");


    for(Map.Entry<ISourceLocation, Count> e : sortedData){
      String L = e.getKey().getURI().toString();

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      nTicks += e.getValue().getTicks();
    }
    PrintWriter out = eval.getStdOut();
    String URLFormat = "%" + maxURL + "s";
    out.printf("PROFILE: %d data points, %d ticks, tick = %d milliSecs\n", data.size(), nTicks, resolution);
    out.printf(URLFormat + "%8s%9s  %s\n", " Source File", "Ticks", "%", "Source");


    for(Map.Entry<ISourceLocation, Count> e : sortedData){
      String L = e.getKey().getURI().toString();


      int ticks = e.getValue().getTicks();

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      int ticks = e.getValue().getTicks();
      double perc = (ticks * 100.0)/nTicks;


      String source = String.format("%s", e.getKey().toString());


      out.printf(URLFormat + "%8d%8.1f%%  %s\n", L, ticks, perc, source);
    }
    
    // Make sure that our output is seen:
    out.flush();
  }

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        synchronized(out) {
            StackTraceElement el = getLine();
            Formatter formatter = new Formatter();
            try {
                String location = formatter.format("(%s:%d)", el.getFileName(), el.getLineNumber()).toString();
                out.printf("vlcj: %-46s | %-5s | %s%n", location, level, format(msg, args));
                out.flush();
                if(t != null) {
                    PrintWriter err = INSTANCE.err;
                    err.printf("vlcj: %-46s | %-5s | %s%n", location, level, t.getMessage());
                    err.flush();

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