Example usage for java.util Hashtable clear

Introduction

In this page you can find the example usage for java.util Hashtable clear.

Prototype

public synchronized void clear() 

Source Link

Document

Clears this hashtable so that it contains no keys.

Usage

From source file:MainClass.java

public static void main(String[] s) {
    Hashtable table = new Hashtable();
    table.put("key1", "value1");
    table.put("key2", "value2");
    table.put("key3", "value3");

    table.clear();

    System.out.println(table);//from   www . j  a v a  2 s.  co m
}

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From source file:Main.java

public static void main(String[] args) {
    Hashtable<String, String> ht = new Hashtable<String, String>();

    ht.put("1", "One");
    ht.put("2", "Two");
    ht.put("3", "Three");
    ht.clear();
    System.out.println(ht.size());
}

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From source file:Main.java

public static void main(String[] s) {
    Hashtable<String, String> table = new Hashtable<String, String>();
    table.put("key1", "value1");
    table.put("key2", "value2");
    table.put("key3", "value3");

    table.clear();

    System.out.println(table);//  w w w  .ja  v a2 s .  c  o  m
}

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From source file:Main.java

public static void main(String args[]) {

    Hashtable<Integer, String> htable = new Hashtable<Integer, String>();

    // put values into the table
    htable.put(1, "A");
    htable.put(2, "B");
    htable.put(3, "C");
    htable.put(4, "from java2s.com");

    // check table content
    System.out.println("Hash table content: " + htable);

    // clear the table
    htable.clear();

    // check content after clear
    System.out.println("Hash table content after clear: " + htable);
}

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From source file:Main.java

public static void main(String args[]) {

    Hashtable<Integer, String> htable = new Hashtable<Integer, String>(10);

    // put values into the table
    htable.put(1, "A");
    htable.put(2, "B");
    htable.put(3, "C");
    htable.put(4, "from java2s.com");

    // check table content
    System.out.println("Hash table content: " + htable);

    // clear the table
    htable.clear();

    // check content after clear
    System.out.println("Hash table content after clear: " + htable);
}

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From source file:Main.java

public static void main(String args[]) {

    Hashtable<Integer, String> htable = new Hashtable<Integer, String>(10, 0.75F);

    // put values into the table
    htable.put(1, "A");
    htable.put(2, "B");
    htable.put(3, "C");
    htable.put(4, "from java2s.com");

    // check table content
    System.out.println("Hash table content: " + htable);

    // clear the table
    htable.clear();

    // check content after clear
    System.out.println("Hash table content after clear: " + htable);
}

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From source file:Main.java

public static void clearHash(Hashtable hash) {
    if (hash != null) {
        hash.clear();
    }
    hash = null;
}

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From source file:be.fgov.kszbcss.rhq.websphere.config.NamedThreadFactory.java

public Thread newThread(final Runnable runnable) {
    // The log4j MDC is stored in an InheritableThreadLocal. We need to clear it.
    Runnable runnableWrapper = new Runnable() {
        public void run() {
            Hashtable<?, ?> context = MDC.getContext();
            if (context != null) {
                context.clear();
            }/*from   w w  w  .  java 2  s .com*/
            runnable.run();
        }
    };
    Thread t = new Thread(group, runnableWrapper, namePrefix + "-" + threadNumber.getAndIncrement());
    t.setDaemon(false);
    t.setUncaughtExceptionHandler(this);
    return t;
}

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From source file:edu.ku.brc.specify.tasks.subpane.wb.ConfigureXLS.java

@Override
protected void nonInteractiveConfig() {
    try {//from  w  w  w .jav a  2 s  .c o m
        InputStream input = new FileInputStream(externalFile);
        POIFSFileSystem fs = new POIFSFileSystem(input);
        HSSFWorkbook workBook = new HSSFWorkbook(fs);
        HSSFSheet sheet = workBook.getSheetAt(0);

        // Calculate the number of rows and columns
        colInfo = new Vector<ImportColumnInfo>(16);

        Hashtable<Integer, Boolean> colTracker = new Hashtable<Integer, Boolean>();

        boolean firstRow = true;
        int col = 0;
        colTracker.clear();

        Vector<Integer> badHeads = new Vector<Integer>();
        Vector<Integer> emptyCols = new Vector<Integer>();
        checkHeadsAndCols(sheet, badHeads, emptyCols);

        if (firstRowHasHeaders && badHeads.size() > 0) {
            status = ConfigureExternalDataIFace.Status.Error;
            showBadHeadingsMsg(badHeads, null, getResourceString("Error"));
            return;
        }

        // Iterate over each row in the sheet
        @SuppressWarnings("unchecked")
        Iterator<HSSFRow> rows = sheet.rowIterator();
        while (rows.hasNext()) {
            HSSFRow row = rows.next();
            if (firstRow || numRows == 1) {
                // Iterate over each cell in the row and print out the cell's content
                int colNum = 0;
                int maxSize = Math.max(row.getPhysicalNumberOfCells(), row.getLastCellNum());
                while (colNum < maxSize) {
                    if (emptyCols.indexOf(new Integer(colNum)) == -1) {
                        ImportColumnInfo.ColumnType disciplinee = ImportColumnInfo.ColumnType.Integer;
                        String value = null;
                        boolean skip = false;
                        HSSFCell cell = row.getCell(colNum);
                        if (cell == null) {
                            //assuming numRows == 1 or not firstRowHasHeaders.
                            //the call to checkHeadsAndCols would have already blank headers.
                            value = "";
                            disciplinee = ImportColumnInfo.ColumnType.String;
                        } else
                            switch (cell.getCellType()) {
                            case HSSFCell.CELL_TYPE_NUMERIC:
                                double numeric = cell.getNumericCellValue();
                                value = Double.toString(numeric);
                                disciplinee = ImportColumnInfo.ColumnType.Double;
                                break;
                            case HSSFCell.CELL_TYPE_STRING:
                                HSSFRichTextString richVal = cell.getRichStringCellValue();
                                value = richVal.getString().trim();
                                disciplinee = ImportColumnInfo.ColumnType.String;
                                break;
                            case HSSFCell.CELL_TYPE_BLANK:
                                value = "";
                                disciplinee = ImportColumnInfo.ColumnType.String;
                                break;
                            case HSSFCell.CELL_TYPE_BOOLEAN:
                                boolean bool = cell.getBooleanCellValue();
                                value = Boolean.toString(bool);
                                disciplinee = ImportColumnInfo.ColumnType.Boolean;
                                break;
                            default:
                                skip = true;
                                break;
                            }

                        if (numRows == 1 && !skip) {
                            colInfo.get(col).setData(value);
                            col++;
                        } else if (!skip) {
                            if (firstRowHasHeaders) {
                                colInfo.add(new ImportColumnInfo(colNum, disciplinee, value, value, null, null,
                                        null));
                                colTracker.put(col, true);
                            } else {
                                String colName = getResourceString("DEFAULT_COLUMN_NAME") + " " + (colNum + 1);
                                colInfo.add(new ImportColumnInfo(colNum, disciplinee, colName, colName, null,
                                        null, null));
                                colTracker.put(colNum, true);
                            }
                            numCols++;
                        }
                    }
                    colNum++;
                }
                firstRow = false;
            }
            numRows++;
        }
        Collections.sort(colInfo);
        readMappings(fs);
        status = Status.Valid;
    } catch (IOException ex) {
        edu.ku.brc.af.core.UsageTracker.incrHandledUsageCount();
        edu.ku.brc.exceptions.ExceptionTracker.getInstance().capture(ConfigureXLS.class, ex);
        status = Status.Error;
    }
}

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From source file:org.openbravo.erpCommon.ad_reports.MInOutTraceReports.java

private void printPageDataSheet(HttpServletResponse response, VariablesSecureApp vars, String strIn,
        String strmProductIdGlobal, String strmAttributesetinstanceIdGlobal,
        Hashtable<String, Integer> calculated, Vector<Integer> count) throws IOException, ServletException {
    if (log4j.isDebugEnabled())
        log4j.debug("Output: dataSheet");
    XmlDocument xmlDocument = xmlEngine/*from   ww w  .  j  a va2 s  .c  o  m*/
            .readXmlTemplate("/org/openbravo/erpCommon/ad_reports/MInOutTraceReports").createXmlDocument();
    MInOutTraceReportsData[] data = null;
    calculated.clear();
    if (strmProductIdGlobal.equals("")) {
        data = new MInOutTraceReportsData[0];
    } else {
        data = MInOutTraceReportsData.select(this, vars.getLanguage(), strmProductIdGlobal,
                strmAttributesetinstanceIdGlobal,
                Utility.getContext(this, vars, "#AccessibleOrgTree", "MInOutTraceReports"),
                Utility.getContext(this, vars, "#User_Client", "MInOutTraceReports"));
    }

    xmlDocument.setParameter("calendar", vars.getLanguage());
    xmlDocument.setParameter("directory", "var baseDirectory = \"" + strReplaceWith + "/\";\n");
    xmlDocument.setParameter("mProduct", strmProductIdGlobal);
    xmlDocument.setParameter("parameterM_ATTRIBUTESETINSTANCE_ID", strmAttributesetinstanceIdGlobal);
    xmlDocument.setData("reportM_ATTRIBUTESETINSTANCE_ID", "liststructure",
            AttributeSetInstanceComboData.select(this, vars.getLanguage(), strmProductIdGlobal,
                    Utility.getContext(this, vars, "#User_Client", "MInOutTraceReports"),
                    Utility.getContext(this, vars, "#AccessibleOrgTree", "MInOutTraceReports")));
    xmlDocument.setParameter("productDescription",
            MInOutTraceReportsData.selectMproduct(this, strmProductIdGlobal));
    xmlDocument.setParameter("paramLanguage", "defaultLang=\"" + vars.getLanguage() + "\";");
    xmlDocument.setParameter("in", strIn);
    xmlDocument.setParameter("out", strIn);

    xmlDocument.setData("structure1", processData(vars, data, strIn, strmProductIdGlobal, calculated, count));
    if (log4j.isDebugEnabled())
        log4j.debug("****FIN: "/*
                                * + ((data!=null && data.length>0)?data[0].html:"")
                                */);

    ToolBar toolbar = new ToolBar(this, vars.getLanguage(), "MInOutTraceReports", false, "", "", "", false,
            "ad_reports", strReplaceWith, false, true);
    toolbar.prepareSimpleToolBarTemplate();
    xmlDocument.setParameter("toolbar", toolbar.toString());
    try {
        WindowTabs tabs = new WindowTabs(this, vars, "org.openbravo.erpCommon.ad_reports.MInOutTraceReports");
        xmlDocument.setParameter("parentTabContainer", tabs.parentTabs());
        xmlDocument.setParameter("mainTabContainer", tabs.mainTabs());
        xmlDocument.setParameter("childTabContainer", tabs.childTabs());
        xmlDocument.setParameter("theme", vars.getTheme());
        NavigationBar nav = new NavigationBar(this, vars.getLanguage(), "MInOutTraceReports.html", classInfo.id,
                classInfo.type, strReplaceWith, tabs.breadcrumb());
        xmlDocument.setParameter("navigationBar", nav.toString());
        LeftTabsBar lBar = new LeftTabsBar(this, vars.getLanguage(), "MInOutTraceReports.html", strReplaceWith);
        xmlDocument.setParameter("leftTabs", lBar.manualTemplate());
    } catch (Exception ex) {
        throw new ServletException(ex);
    }
    {
        OBError myMessage = vars.getMessage("MInOutTraceReports");
        vars.removeMessage("MInOutTraceReports");
        if (myMessage != null) {
            xmlDocument.setParameter("messageType", myMessage.getType());
            xmlDocument.setParameter("messageTitle", myMessage.getTitle());
            xmlDocument.setParameter("messageMessage", myMessage.getMessage());
        }
    }

    response.setContentType("text/html; charset=UTF-8");
    PrintWriter out = response.getWriter();
    out.println(xmlDocument.print());
    out.close();
}

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