// file name MyFirstClass.java

import java.util.*;
import java.lang.Math;
import java.io.*;
import javax.swing.*;

public class MyFirstClass{ // start of program
  public static void main(String[] args) { // basic  function main

// variables and calculation
int a=2;
int b=3;
int c=Integer.parseInt(JOptionPane.showInputDialog(" Put number: ", "1"));
System.out.println("Number is: "+c);
System.out.println(a+" * "+b+" = "+(a*b));
System.out.println("a^3 "+Math.pow(a,b));

//array
int[] array_my=new int[10];
array_my[0]=3;
array_my[1]=5;
System.out.println("Number of elements "+array_my.length+" 1 + 2 element of array "+(array_my[0]+array_my[1]));

//strings
String txt="Quick red fox";
String txt2=JOptionPane.showInputDialog("Write text: ", "word");
System.out.println("Text is: "+txt2);
String[] count_of_word=txt.split(" ");
System.out.println("Length: "+txt.length()+" Count of words "+count_of_word.length);
System.out.println(txt +" -> "+txt.replace("red","brown"));
System.out.println("First 5 chars of string is: "+ txt.substring(0,5));

//for a if
for(int i=0; i<10;i++){
	if(i==3)System.out.println("i equal "+i);
	}

// file
try {
  File soubor=new File("some_file.txt");
  if(!soubor.exists()){
	System.out.println("File dont exist");
  }
  else { // utf-8 encoding
    BufferedReader in1 = new BufferedReader(new InputStreamReader(new FileInputStream(soubor),"UTF-8"));
    BufferedWriter out1 = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("zapis.txt"),"UTF-8"));
    String str;
      while ((str = in1.readLine())!=null){
        System.out.println(str);
        out1.write(str+"

");
      }
    in1.close();
    out1.close();
   }
 } catch(IOException e){System.out.println("Error " + e);}

// dir
 File pathName = new File("some_dir");
 String[] fileNames = pathName.list();
 if(pathName.exists())
 System.out.println("Name of first file in  "some_dir": "+fileNames[0]);
 else System.out.println("dir not exist");

//function
int nResult = calculateMyFc(3,5);
System.out.println("Result of function: "+nResult);

} // end of function main

// new function , you can add to end MyFc = my function
public static int calculateMyFc(int a, int b){
return (a+b);
}

} // end of class of program

Type name of template in Eclipse s editor and pres Ctrl+Space

Select your template from intellisense help and press Enter or double click on selected item.

	mIdButtonHome.setOnClickListener(new View.OnClickListener() {
		public void onClick(View v) {
			Intent browserIntent = new Intent(Intent.ACTION_VIEW,
					Uri.parse("//android.okhelp.cz/category/software/"));
			startActivity(browserIntent);
		}
	});

/*in css*/
.links{
line-height: 48px;
font-size: 20px;
background-color: rgb(255,204,0);
}

/* in html page set class of link*/
<a class="links" href="m.mydomen.com/mypage.html">Blah blah mypage</a>

// or in css for all links on page
a {
line-height: 48px;
font-size: 20px;
}

/*html page*/
<a href="m.mydomen.com/mypage.html">Blah blah mypage</a>

Bitmap myBitmap = BitmapFactory.decodeResource(getResources(),R.drawable.my_image)
.copy(Bitmap.Config.ARGB_8888, true);
Canvas c = new Canvas(myBitmap);
// etc.  ....... 

public class MainClass {
	public static void main(String[] arg) {
		String[] arrayOfString = {"nothing", "Hello", "people"
				, "bye-bye", "hello", "world!", "end" };
		
	    OuterLoop: for (int i = 0;i<6; i++) {
	        for (int j = 0; j < arrayOfString.length; j++) {
	        	if (arrayOfString[j].equals("world!")) {
	            continue OuterLoop; // as goto from Csharp, or C/C++
	          }
	          System.out.println(arrayOfString[j]);
	          System.out.println(i);
	          if (i == 1) {
	        	  System.out.println("break");
	        	  
	        	  break OuterLoop;
	          }
	        }
	      }
		
	}
}
/*
nothing
0
Hello
0
people
0
bye-bye
0
hello
0
nothing
1
break
*/