Examples of java.io.PrintWriter.checkError()

java.io.PrintWriter.checkError()
Answers a boolean indicating whether or not this PrintWriter has encountered an error. If so, the receiver should probably be closed since further writes will not actually take place. A side effect of calling checkError is that the target Writer is flushed. @return boolean has an error occurred in this PrintWriter.


            // Print the file epilog
            writer.println("</tomcat-users>");


            // Check for errors that occurred while printing
            if (writer.checkError()) {
                writer.close();
                fileNew.delete();
                throw new IOException
                    (sm.getString("memoryUserDatabase.writeException",
                                  fileNew.getAbsolutePath()));

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        try {
            FileOutputStream fos = new FileOutputStream(manifestFile);
            OutputStreamWriter osw = new OutputStreamWriter(fos, Manifest.JAR_ENCODING);
            w = new PrintWriter(osw);
            toWrite.write(w, flattenClassPaths);
            if (w.checkError()) {
                throw new IOException("Encountered an error writing manifest");
            }
        } catch (IOException e) {
            throw new BuildException("Failed to write " + manifestFile,
                                     e, getLocation());

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                                         getProject().getTaskDefinitions().get(tName));
            }


            printer.printTail(out);


            if (out.checkError()) {
                throw new IOException("Encountered an error writing Ant"
                                      + " structure");
            }
        } catch (IOException ioe) {
            throw new BuildException("Error writing "

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            }
            if (rc > 1) {
                throw new BuildException("Compile failed, messages should "
                    + "have been provided.");
            }
            if (w.checkError()) {
                throw new IOException("Encountered an error");
            }
        } catch (IOException ioe) {
            throw new BuildException("Unexpected IOException while "
                + "playing with Strings", ioe);

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            PrintWriter wri = new PrintWriter(new OutputStreamWriter(new BufferedOutputStream(os), "UTF8"));
            wri.write("<?xml version=\"1.0\" encoding=\"UTF-8\" ?>\n");
            (new DOMElementWriter()).write(doc.getDocumentElement(), wri, 0, "  ");
            wri.flush();
            // writers do not throw exceptions, so check for them.
            if (wri.checkError()) {
                throw new IOException("Error while writing DOM content");
            }
        } finally {
            os.close();
        }

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            final ChangeLogWriter serializer = new ChangeLogWriter();


            serializer.printChangeLog(writer, entrySet);


            if (writer.checkError()) {
                throw new IOException("Encountered an error writing changelog");
            }
        } catch (final UnsupportedEncodingException uee) {
            getProject().log(uee.toString(), Project.MSG_ERR);
        } catch (final IOException ioe) {

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        // time to write the manifest
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        OutputStreamWriter osw = new OutputStreamWriter(baos, Manifest.JAR_ENCODING);
        PrintWriter writer = new PrintWriter(osw);
        manifest.write(writer, flattenClassPaths);
        if (writer.checkError()) {
            throw new IOException("Encountered an error writing the manifest");
        }
        writer.close();


        ByteArrayInputStream bais =

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                    }
                }
            }
        }


        if (writer.checkError()) {
            throw new IOException("Encountered an error writing jar index");
        }
        writer.close();
        ByteArrayInputStream bais =
            new ByteArrayInputStream(baos.toByteArray());

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            // Print the file epilog
            writer.println("</tomcat-users>");


            // Check for errors that occurred while printing
            if (writer.checkError()) {
                writer.close();
                fileNew.delete();
                throw new IOException
                    (sm.getString("memoryUserDatabase.writeException",
                                  fileNew.getAbsolutePath()));

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        mw.close();


        assertOutput("</div></span>");


        assertEquals(false, writer.checkError());


        writer.println();


        assertEquals(true, writer.checkError());
    }

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