My Codes

  public class Main { public static void main ( String []arg) { //student k marks // data type int variabel name studentMarks = value 49 int studentMarks = 49 ; // (>= gratorThan equle to) oprator malom kary ga k studentMarks ziada hy 50 sy. ya equle hy 50 k. // ya 50 jo pass hony k liy shart hy Ya kam hy 50 sy. if ( studentMarks >= 50 ) { // agar student k marks 50 ho ya 50 sy ziada ho to passed print hojay ga System . out .println( "passed" ); } else { // agar studnet k marks 50 sy kam ho to "Failed" print hojay ga. System . out .println( "Failed" ); } } }

  import java.util.ArrayList ; public class Main { public static void main ( String []ar){ //ArrayList in java //ArrayList main koi limet nahi hota is amin aap no limet Item daal sakty ho // <>k anda aap data type btasakty ho jisa k is main<String> data type add hy // sintax ArrayList<data type> aryVriableName = new ArrayList(); ArrayList < String > arrayList = new ArrayList(); //arryList main Value add krna //is main sirf String add hosakta hy arrayList .add( "0" ); arrayList .add( "1" ); arrayList .add( "2" ); arrayList .add( "3" ); arrayList .add( "4" ); arrayList .add( "5" ); arrayList .add( "6" ); arrayList .add( "7" ); // Loops in java // loop 3 tarha k hoty hain // 1. while loop // 2. do while loop // 3. for loop ...

  import java.util.ArrayList ; public class Main { public static void main ( String []ar){ //ArrayList in java //ArrayList main koi limet nahi hota is amin aap no limet Item daal sakty ho // <>k anda aap data type btasakty ho jisa k is main<String> data type add hy // sintax ArrayList<data type> aryVriableName = new ArrayList(); ArrayList < String > arrayList = new ArrayList(); //arryList main Value add krna //is main sirf String add hosakta hy arrayList .add( "rafiq" ); arrayList .add( "qadeer" ); arrayList .add( "meera" ); arrayList .add( "saim" ); //rafiq print hoga System . out .println( arrayList .get( 0 )); // arrayList sy data/Value delete karna arrayList .remove( 0 ); //qadeer print hoga q k yahan tak code sy Value delete hochuka hy System . out .println( arrayList .get( 0 )); ...

  public class Main { public static void main ( String []ar){ // array diclair karna String [] array1 = new String[ 10 ]; // array main value dalna array1 [ 0 ] = "rafiq" ; array1 [ 1 ] = "hayat" ; array1 [ 2 ] = "raja" ; array1 [ 3 ] = "gohar" ; array1 [ 4 ] = "naeem" ; array1 [ 5 ] = "qadeer" ; array1 [ 6 ] = "rahim" ; array1 [ 7 ] = "ibraheem" ; array1 [ 8 ] = "thanver" ; array1 [ 9 ] = "tosif" ; //assay say value nikalna 2 posstion             par raja hay to rafa print hoga System . out .println( array1 [ 2 ]); //dosta tariqa array main value dalny ka String [] aryVadiableName = { "rafiq" , "hayar" , "raja" }; //0 posstion par rafiq hy to rafiq print hoga System . out .println( aryVadiableName [ 0 ])...

//java code for calculater +, -, *, /, package com.rafiqhussain.rafiqcalculater; import androidx.appcompat.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class MainActivity extends AppCompatActivity { //inshlaiz ابتدا        // field or vareble  diclarerion EditText etFirtsvalue , edSecondValue ; TextView tvAns ; Button add , sub , multyply , divide ; @Override protected void onCreate(Bundle savedInstanceState) { super .onCreate(savedInstanceState); setContentView(R.layout. activity_main ); // (xml item's k ID's) ko find kar k variable (etFirtsvalue ) sy band dia jor kia gia... etFirtsvalue = findViewById(R.id. et_1 ); //is main user jo value dega us ko ham sy integer main badalna hoga line 51 main +-/* ko karny k liy nahi to nahi hoga. edSecondValue = findViewById(R....