Example usage for java.util HashMap put

Introduction

In this page you can find the example usage for java.util HashMap put.

Prototype

public V put(K key, V value)

Source Link

Document

Associates the specified value with the specified key in this map.

Usage

From source file:Main.java

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

    hMap.put("1", "One");
    hMap.put("2", "Two");
    hMap.put("3", "Three");

    Object obj = hMap.remove("2");
    System.out.println(obj + " Removed from HashMap");
}

From source file:Main.java

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

    hMap.put("1", "One");
    hMap.put("2", "Two");
    hMap.put("3", "Three");

    hMap.clear();/*  w w  w  .java2  s  . c  o  m*/
    System.out.println(hMap.size());
}

From source file:Main.java

public static void main(String[] args) {
    HashMap<String, String> hm = new HashMap<String, String>();
    hm.put("4", "four");
    hm.put("3", "three");
    hm.put("1", "one");
    hm.put("2", "two");

    Map<String, String> treeMap = new TreeMap<String, String>(hm);
    System.out.println(treeMap);/*from ww  w  . j  a v a 2 s  .  c  o  m*/
}

From source file:Main.java

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

    hMap.put("1", "One");
    hMap.put("2", "Two");
    hMap.put("3", "Three");

    boolean blnExists = hMap.containsKey("3");
    System.out.println("3 exists in HashMap ? : " + blnExists);
}

From source file:Main.java

public static void main(String[] a) {
    HashMap<String, String> map = new HashMap<String, String>(10, 0.75F);
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");

    System.out.println(map);/*from w ww  . j  av  a 2 s.c o  m*/
}

From source file:MainClass.java

public static void main(String[] args) throws Exception {
    Document document = new Document();
    PdfWriter.getInstance(document, new FileOutputStream("2.pdf"));
    document.open();/*  w  w  w  . j  av a  2  s.  c  o m*/
    document.add(new Paragraph("Hello World"));
    document.close();
    PdfReader reader = new PdfReader("2.pdf");
    System.out.println("Tampered? " + reader.isTampered());
    PdfStamper stamper = new PdfStamper(reader, new FileOutputStream("2.pdf"));
    HashMap info = reader.getInfo();
    info.put("Subject", "subject");
    info.put("Author", "author");
    info.put("Keywords", "keywords");
    info.put("Title", "title");
    info.put("Creator", "creator");
    stamper.setMoreInfo(info);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    XmpWriter xmp = new XmpWriter(baos, info);
    xmp.close();
    stamper.setXmpMetadata(baos.toByteArray());
    stamper.close();
}

From source file:Main.java

public static void main(String args[]) {
    HashMap<Integer, Integer> map = new HashMap<Integer, Integer>();

    map.put(1, 2);
    map.put(2, 3);/*  w w w  .  j a  v  a 2 s .  c  o  m*/
    map.put(3, 4);

    for (Integer key : map.keySet()) {
        System.out.println(map.get(key));
    }
}

From source file:Main.java

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

    Collection set = map.values();
    Iterator iter = set.iterator();

    while (iter.hasNext()) {
        System.out.println(iter.next());
    }/*from w  w  w  .  j a  va 2s  .  com*/
}

From source file:Main.java

public static void main(String[] args) {
    HashMap<String, String> hm = new HashMap<String, String>();
    hm.put("3", "three");
    hm.put("1", "one");
    hm.put("4", "four");
    hm.put("2", "two");
    printMap(hm);//  w w  w. j av a2  s . com
}

From source file:Main.java

public static void main(String[] a) {
    HashMap<String, String> map = new HashMap<String, String>();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");
    map.put(null, null);/*from  w w w.j a va2s .  c o  m*/

    HashMap<String, String> map2 = new HashMap<String, String>();
    map2.put("key4", "value4");
    map2.put("key5", "value5");
    map2.put("key6", "value6");
    map.putAll(map2);

    System.out.println(map);
}