Gopal Yadav

Thread in Java  import java.util.*;i mport java.time.*; public class Main {      public static void main(String[] args) { //GregorianCalendar date= new GregorianCalendar(); //System.out.println(date.get(Calendar.DAY_OF_WEEK)); MyDate md= new MyDate(); try { md.sleep(2000); md.start(); } catch (InterruptedException e) { System.out.println(e); } } } class MyDate extends Thread { @Override public void run() { java.time.LocalDateTime ldt= LocalDateTime.now(); String dt=ldt.toString(); System.out.println("Current Date :  "+dt.substring(0,dt.indexOf("T"))); System.out.println("Current Time :  "+dt.substring(dt.indexOf("T")+1,dt.indexOf("."))); try{ int a=22/0; System.out.println(a); }catch(ArithmeticException e){ String s=e.toString(); if(s.contains("java.lang.ArithmeticException:")){ System.out.println(s.substring(s.indexOf(":")+2...

Calendar and Date-time  import java.util.ArrayList; import java.util.LinkedList; import java.util.Date; import java.util.concurrent.*; import java.io.*; import java.time.*; import java.util.Calendar; import java.util.TimeZone; import java.util.GregorianCalendar; public class Main { public static void main(String []arg){ System.out.println("Collection framwork"); System.out.println("\n\n\n\n ArrayList Methods \n"); ArrayList<String> element = new ArrayList<>(); ArrayList<String> solidelement = new ArrayList<>(); solidelement.add("Calsium"); solidelement.add("Iron"); solidelement.add("Aluminium"); solidelement.add("Cuper"); element.add("Hydrogon"); element.add("Helium"); element.add("Lithium"); element.add("Berilium"); element.add("Boron"); element.add("Carbon"); element.add("Hydrogon...

 import java.util.*; import java.time.*; import java.io.File; import java.io.IOException; import java.io.FileWriter; import java.io.FileNotFoundException; import java.io.Console; public class Main { public static void main(String[] args) {     String myStr= "Gopal Yadav "; System.out.println(myStr); // System.out.println();                  /*         // Write File          File myFile= new File("/storage/emulated/0/@All_Tutorial_List@/Java_Tutor/MyJavaConsoleApp/src/hum.text");         try {             myFile.createNewFile();                     } catch (IOException e) {             System.out.println("kuch nhi hua @##@##@@##@$$@@@##@@"+e);         }                   ...

 // Audio in Android // Main Activitiy.java ************************************ package com.woh.taj; import android.app.Activity; import android.content.Context; import android.media.AudioManager; import android.media.MediaPlayer; import android.os.Bundle; import android.view.View; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.SeekBar; public class AudioActivity extends Activity {     public ImageView pause; public boolean playing= false;     public LinearLayout layout;     @Override     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main); pause = findViewById(R.id.pause);         layout = findViewById(R.id.mainLinearLayout);                                   ...

  // TabHost App // MainActivity.java ************************************** package com.higoigfuggiu.itifuffi;   import android.app.Activity; import android.os.Bundle; import android.widget.TabHost; public class MainActivity extends Activity {      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main); TabHost th=findViewById(R.id.host); th.setup(); TabHost.TabSpec spec= th.newTabSpec("One"); spec.setContent(R.id.tab1); spec.setIndicator("Home"); th.addTab(spec); spec= th.newTabSpec("Two"); spec.setContent(R.id.tab2); spec.setIndicator("Favorite"); th.addTab(spec); spec= th.newTabSpec("Three"); spec.setContent(R.id.tab3); spec.setIndicator("Famous"); th.addTab(spec); spec= th.newTabSpec("Four"); spec.setContent(R.id.tab4); spec.setIndicator...

 //WebView in Android // MainActivity.java ************************************** package com.mywebsite.com;   import android.app.Activity; import android.os.Bundle; import android.webkit.*; import android.webkit.WebSettings; import android.widget.Button; import android.view.View; public class MainActivity extends Activity {        Button btn;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);                  btn = findViewById(R.id.button);         final WebView webView;        webView =(WebView) findViewById(R.id.web);                  WebSettings webSetting= webView.getSettings();                  webSetting.setJ...

  // Google microphone  // MainActivity.java ************************************* package com.multyply.app; import android.app.Activity; import android.graphics.Color; import android.os.Bundle; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.widget.LinearLayout; import android.widget.Toast; import android.content.Intent; import android.speech.RecognizerIntent; import android.speech.RecognitionListener; import java.util.Locale; import android.content.ActivityNotFoundException; import android.widget.TextView; import java.util.ArrayList;   public class MainActivity extends Activity { LinearLayout main; TextView txt; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); txt = findViewById(R.id.txt); } @Override public boolean onCreateOptionsMenu(Menu menu) { menu.add(0,0,0,"Setting"); menu.add(...

 // SQLite ******************************** // MainActivity.java ************************************* package com.mycodudjdjf.gkck; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.widget.Toast; import com.mycodudjdjf.gkck.data.MyDbHandler; import com.mycodudjdjf.gkck.modle.Contact; import java.util.List; public class MainActivity extends Activity {      String[]name={"H","He","Li","Be","B","C","N","O","F","Ne","Na","Mg","Al","Si","P","S","Cl","Ar","K","Ca"};     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);                  MyDbHandler db= new MyDbHandler(MainActivity.this);          //         // Contact harry=new ...

  // Element and Swipe Gester App  // MainActivity.java ************************************* package com.mycompany.myapp2; import android.app.ActionBar; import android.app.Activity; import android.content.Intent; import android.os.Bundle; import android.view.GestureDetector; import android.view.MotionEvent; import android.view.View; import android.widget.ArrayAdapter; import android.widget.AutoCompleteTextView; import android.widget.LinearLayout; import android.widget.TextView; import android.widget.Toast; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; public class MainActivity extends Activity {     SwipeListener swipelistener;     LinearLayout main; TextView textView;      AutoCompleteTextView autoCompleteTextView;     ArrayAdapter adapter;     String value;     public static final String key_Text = "com.mycompany.myapp2";     String[] nameList = {   ...

 // Toc Tac Game  // Main activity.Java ************************************ package com.kon.hum.ok; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends Activity implements View.OnClickListener {     private Button[][] buttons = new Button[3][3];     private boolean player1Turn = true;     private int roundCount;     private int player1Points;     private int player2Points;     private TextView textViewPlayer1;     private TextView textViewPlayer2;     @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);         textViewPlayer1 = findViewById(R.id.text_view_p1);     ...