Fill the entire canvas with the specified color.

@Override
    public void onDraw(Canvas canvas) {
    canvas.drawColor(Color.GREEN);
}

Show keyboard Android phone apps development example source code.

// ActivityClass.java
InputMethodManager showSoftInput;
Button hBtnKeyboardShow ;
//onCreate
showSoftInput = (InputMethodManager)this.getSystemService(Context.INPUT_METHOD_SERVICE);

hBtnKeyboardShow = (Button)findViewById(R.id.btnKeyboardShow);
hBtnKeyboardShow.setOnClickListener(myButtonListener);
// END onCreate

//button listener
private OnClickListener myButtonListener = new OnClickListener() {
     public void onClick(View v) {
     	 try {
     		 showSoftInput.getInputMethodList();
                 showSoftInput.toggleSoftInput(showSoftInput.SHOW_FORCED, 0);	
		} catch (Exception e) {
			Log.e("Keyboard show ", e.getMessage());
			
		}
     }
};

Shortcut
Windows
Ctrl + Alt + L (format selection or all page)
Ctrl + Alt + Shift + L (show a dialog)
Linux
Ctrl + Windows Key + Alt + L

From menu Code
Code > Reformat Code

If you have to type frequently the same code you can create templates which can be activate via autocomplete with Ctrl + Space.

For example lets assume setOnClickListener body.

To create a template for this select the menu Window->Preferences and Open Java -> Editor -> Templates

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

[caption id="attachment_1114" align="alignleft" width="300" caption="Eclipse-show-template-proposals"][/caption]

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

[caption id="attachment_1116" align="alignleft" width="300" caption="Eclipse - select your template"][/caption]

	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);
		}
	});

Quick help in Eclipse editor: select keyword and press Ctrl+1

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
*/