Example usage for java.util Map get

Introduction

In this page you can find the example usage for java.util Map get.

Prototype

V get(Object key);

Source Link

Document

Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.

Usage

From source file:MainClass.java

public static void main(String[] a) {

    Map map = new HashMap();
    map.put("key1", "value1");
    map.put("key2", "value2");
    map.put("key3", "value3");

    System.out.println(map.get("key2"));
}

From source file:org.freakz.hokan_ng_springboot.bot.Application.java

public static void main(String[] args) {
    CommandLineArgsParser parser = new CommandLineArgsParser(args);
    Map<CommandLineArgs, String> parsed = parser.parseArgs();
    String url = parsed.get(CommandLineArgs.JMS_BROKER_URL);
    if (url != null) {
        JMS_BROKER_URL = url;// ww w.jav  a  2  s .com
    }
    log.debug("JMS_BROKER_URL: {}", JMS_BROKER_URL);

    SpringApplication.run(Application.class, args);
}

From source file:Main.java

public static void main(String[] args) throws Exception {
    String bubba = "this is a test this is a test";
    Map<Integer, Integer> occurrences = new HashMap<Integer, Integer>();

    for (String currentWord : bubba.split(" ")) {
        Integer current = occurrences.get(currentWord.length());
        if (current == null) {
            current = 0;//w  w  w  .j  ava 2 s .  co  m
        }
        occurrences.put(currentWord.length(), current + 1);
    }
    for (Integer currentKey : occurrences.keySet()) {
        System.out.println("There are " + occurrences.get(currentKey) + " " + currentKey + " letter words");
    }
}

From source file:Main.java

public static void main(String[] args) {

    // create a new list of arguments for our process
    String[] list = { "notepad.exe", "test.txt" };

    // create the process builder
    ProcessBuilder pb = new ProcessBuilder(list);

    // get the environment of the process
    Map<String, String> env = pb.environment();

    // get the system drive of the environment
    System.out.println(env);/* w w w.j  a  v a2  s. c o m*/
    System.out.println(env.get("SystemDrive"));
}

From source file:com.mmj.app.common.util.URLUtils.java

public static void main(String[] args) throws MalformedURLException {
    String subway_url = "http://detail.tmall.com/item.htm?spm=a1z10.4.w5003-3705396631.2.aiPsIi&id=22490775015&&mt=&&scene=taobao_shop";
    Map<String, Object> params = getParams(new URL(subway_url));
    System.out.println(params);//  ww w. j a va 2  s .  c  om
    System.out.println(params.get("token"));
}

From source file:com.alibaba.dubbo.examples.redis.RedisConsumer.java

@SuppressWarnings("unchecked")
public static void main(String[] args) throws Exception {
    String config = RedisConsumer.class.getPackage().getName().replace('.', '/') + "/redis-consumer.xml";
    ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(config);
    context.start();/*from  w  w  w  . j  ava2 s.c  om*/
    Map<String, Object> cache = (Map<String, Object>) context.getBean("cache");
    cache.remove("hello");
    Object value = cache.get("hello");
    System.out.println(value);
    if (value != null) {
        throw new IllegalStateException(value + " != null");
    }
    cache.put("hello", "world");
    value = cache.get("hello");
    System.out.println(value);
    if (!"world".equals(value)) {
        throw new IllegalStateException(value + " != world");
    }
}

From source file:com.joshlong.examples.data.counter.Main.java

public static void main(String[] args) throws Throwable {
    ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:/counter.xml");
    Map<String, Counter> counters = ac.getBeansOfType(Counter.class);
    for (String beanName : counters.keySet())
        exercise(beanName, counters.get(beanName));
}

From source file:Counter.java

public static void main(String[] args) {
    Map hm = new HashMap();
    for (int i = 0; i < 10; i++) {
        Integer r = new Integer(20);
        if (hm.containsKey(r))
            ((Counter) hm.get(r)).i++;
        else/*from  w ww.j  av  a 2s.c  o m*/
            hm.put(r, new Counter());
    }
    System.out.println(hm);
}

From source file:com.alibaba.dubbo.examples.memcached.MemcachedConsumer.java

@SuppressWarnings("unchecked")
public static void main(String[] args) throws Exception {
    String config = MemcachedConsumer.class.getPackage().getName().replace('.', '/')
            + "/memcached-consumer.xml";
    ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext(config);
    context.start();/*from  w  w w. java 2s.  c om*/
    Map<String, Object> cache = (Map<String, Object>) context.getBean("cache");
    cache.remove("hello");
    Object value = cache.get("hello");
    System.out.println(value);
    if (value != null) {
        throw new IllegalStateException(value + " != null");
    }
    cache.put("hello", "world");
    value = cache.get("hello");
    System.out.println(value);
    if (!"world".equals(value)) {
        throw new IllegalStateException(value + " != world");
    }
    System.in.read();
}

From source file:Main.java

public static void main(String[] args) {
    Map errors = new HashMap();

    errors.put("404", "A.");
    errors.put("403", "B.");
    errors.put("500", "C.");

    String errorDesc = (String) errors.get("404");
    System.out.println("Error 404: " + errorDesc);

    Iterator iterator = errors.keySet().iterator();
    while (iterator.hasNext()) {
        String key = (String) iterator.next();
        System.out.println("Error " + key + " means " + errors.get(key));
    }// ww  w.j  a v  a2 s . c  o m
}