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Goto labeled statement in Java example



Goto in for cycle Java example source code.
MainClass.java

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
*/

397LW NO topic_id



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Alert messagebox toast Android example code | alert-messagebox-toast-android-example-code


Toast in Android application is equivalent of Alert in JavaScript or MessageBox in WinApi.


// Toast android.widget.Toast.makeText(Context context, CharSequence text, int duration)
// public static Toast makeText (Context context, CharSequence text, int duration) 

Toast.makeText(getApplicationContext(), "Hello world!",
                  Toast.LENGTH_SHORT).show();

137

Draw drawARGB() Android basic example | draw-drawargb-android-basic-example



public class MainActivity extends Activity {
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(new SampleView(this));
	}

	private static class SampleView extends View {

		// CONSTRUCTOR
		public SampleView(Context context) {
			super(context);
			setFocusable(true);

		}
		@Override
		protected void onDraw(Canvas canvas) {
			//drawARGB (int a, int r, int g, int b)
//			a  alpha component (0..255) of the color to draw onto the canvas 
//			r  red component (0..255) 
//			g  green component (0..255)  
//			b  blue component (0..255)  

			canvas.drawARGB(255, 0, 255, 10); 
		}

	}
}


220

How to save the state of Activity - Android | how-to-save-the-state-of-activity-android


onSaveInstanceState, onRestoreInstanceState , save preferences

int mCurrentPhotoIndex = 0;
   @Override
    protected void onSaveInstanceState(Bundle outState) {
        outState.putInt("photo_index", mCurrentPhotoIndex);
        super.onSaveInstanceState(outState);
    }

    @Override
    protected void onRestoreInstanceState(Bundle savedInstanceState) {
        mCurrentPhotoIndex = savedInstanceState.getInt("photo_index");
        super.onRestoreInstanceState(savedInstanceState);
    }

// or save preferences for new start of Activity in onStop
//onCreate or onResume or onStart etc.
public void loadPreferences() {
		SharedPreferences settings = getSharedPreferences(F.PREFERENCES_NAME, 0);
		mCurrentPhotoIndex = settings.getInt("mCurrentPhotoIndex",mCurrentPhotoIndex);
	// String_sOtazka = settings.getString("_sOtazka", _sOtazka);


}
// onStop
public void savePreferences() {
		SharedPreferences settings = getSharedPreferences(PREFERENCES_NAME, 0);
		SharedPreferences.Editor editor = settings.edit();
		editor.putInt("mCurrentPhotoIndex", mCurrentPhotoIndex);
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		// editor.putString("mButton1", mButton1.getText().toString());

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312

Windows set Environment Variables - Java path | windows-set-environment-variables-java-path


How set JAVA path to Environment Variables on Windows (7)
Select Start menu > Computer > System Properties > Advanced System Settings(properties).
Then open Advanced tab > Environment Variables and add a new system variable JAVA_HOME that points to your JDK folder, for example

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393

Android 4.4 Lenovo A6000 black screen | android-4-4-lenovo-a6000-black-screen


Try reboot device.
Start device with start button on side of phone.
Screen will go to light black color.
Long press Start button for menu:
Power off
Reboot
Airplane mode

Reboot item is in same level like Start button.
Click on the screen - (Hear a click)
Now find OK button , it is under Reboot item on right side of screen.
Press OK (Hear a click)
Wait a moment.
If device to do nothing , try short press Start button (sreen will black)
and again to press Start button. If screen go to light black color,
try again find Reboot item as written above.


Editace Jana Žákovská : 2011-10-04 10:48:30
Počet článků v kategorii: 397
Url:goto-labeled-statement-in-java-example
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