How are you old - date calendar age Java Android example

How add pair of strings to Hashtable, how get pair key value from Hashtable, how split string, basic Java Android example.

MainClass.java

import java.util.Enumeration;
import java.util.Hashtable;
public class MainClass {
	public static void main(String[] arg) {
		
		// english;germany dictionary
		String[] arrayOfString = { "one;eine", "two;zwei", "three;drei" };

	    Hashtable<String, String> hashTable = new Hashtable<String, String>();
	    for(String s: arrayOfString){
	    	String[] array = s.split(";");
	    	String sKey ="", sValue="";
	    	if(array.length > 1){
	    	sKey = array[0]; sValue = array[1];
	    		hashTable.put(sKey, sValue);
	    	}
	    }

	    Enumeration<String> enumer = hashTable.keys();
	    while (enumer.hasMoreElements()) {
	      String keyFromTable = (String) enumer.nextElement();
	      // get Returns the value to which the specified key is mapped, 
	      // or null if this map contains no mapping for the key
	      System.out.println(keyFromTable + " = " + hashTable.get(keyFromTable));
	    }       

	    
	}
}
/*
two = zwei
one = eine
three = drei
 */

How add item to ArrayList, sort ArrayList, search find index of item in ArrayList, min(), max() Java basic example.

import java.util.ArrayList;
import java.util.Collections;

public class MainClass {
	public static void main(String[] arg) {
		String[] arrayOfString = {"nothing", "Hello", "people"
				, "bye-bye", "hello", "world!", "End" };
		   ArrayList<String> arrayList = new ArrayList<String>();
            for(String s: arrayOfString)
		     arrayList.add(s);

		    Collections.sort(arrayList);
		    // foreach
		    for (String str: arrayList)
		      System.out.println(str);
		    
		    Object objMin = Collections.min(arrayList);
		    System.out.println("Min is: " + objMin);
		    
		    Object objMax = Collections.max(arrayList);
		    System.out.println("Max is: " + objMax);
		    
		    int index = Collections.binarySearch(arrayList, "people");
		    System.out.println("Index of people is: " + index);
		    
		  }

		
	
}
/*
End
Hello
bye-bye
hello
nothing
people
world!
Min is: End
Max is: world!
Index of people is: 5
*/

Converting to string: TypedValue{t=0x10/d=0xe a=-1}

    

        14 // error

        "18" // ok

 

Brand	Motorola
Model (codename)	Droid Razr
Price (cena, včetně DPH v KCZ)	10800 / 06.2012
Display size in Inch (v palcích)	4.3
Display-resolution	540x960
Dotek-typ	capacitive
CPU typ	TI 4430
CPU MHz	1.2 GB
CPU core	2
L2 cache
RAM	1024
ROM	15600
GPU	SGX540
NenaMark2 Benchmark
GPU-GLBenchmark	3299
Baterie mAh	1780
Foto MPx	8
Autofocus	AF
Video	HD video 30 frames/s
Official Android ICS	Google Android 2.3.5 (Gingerbread)
CyanogenMod support
Dotek-prstů-max	10
Display-ppi	256
Display-retina	79%
Networks
Connectivity	GSM: 850/900/1800/1900 MHz, EDGE, GPRS 3G: 900/2100 MHz, HSDPA, HSUPA, HSPA+ Bluetooth: 4.0 (EDR, A2DP, FTP, PBAP, AVRCP) Wi-Fi: 802.11b/g/n PC: microUSB, USB 2.0, microHDMI Senzors: proximity, gyroskop, akcelerometr GPS: yes, A-GPS, digital compas
Note	Super AMOLED Display

Motorola Droid Razr image

How to quickly change all icon set in .apk project with Eclipse:

Right click on project in folder tree
Select New - Ohter


In open wizard dialog select Android Icon Set


Set Icon set name:


Open some large icon for your project for example 512x512 px and wizard will make all set of icons from one largest icon:


Wizard will create all set of icons from this one largest icon.
Click on finish button: