JAVA

  package code . mypack ; public class src { public static void main ( String [] args ) { for ( int i = 1 ; i < 6 ; i ++ ){     System . out . println ( i );     //the loop ends after i==2 as we used break statement     if ( i == 2 ){         break ;     } } for ( int i = 0 ; i < 6 ; i ++ ) { System . out . println ( i );     if ( i == 2 ){         continue ;     }     //here java is not printed as the continue statement ignores the print statement and continues the iteration     System . out . println ( "java" );     } } }

  package code . mypack ; import java . util . Scanner ; public class src { public static void main ( String [] args ) {     System . out . println ( "Enter n:" ); Scanner sc = new Scanner ( System . in ); int n = sc . nextInt (); for ( int i = 1 ; i <= 10 ; i ++ ){     System . out . printf ( "%d X %d=%d \n " , n , i , n * i ); } } }

  package code . mypack ; import java . util . Scanner ; public class src { public static void main ( String [] args ) {     System . out . println ( "Enter n: " );   Scanner sc = new Scanner ( System . in ); int n = sc . nextInt (); int sum = 0 ; for ( int i = 0 ; i <= n ; i ++ ){     sum = sum + i ; }         System . out . println ( sum ); } }

  package code . mypack ; import java . util . Scanner ; public class src { public static void main ( String [] args ) { System . out . println ( "Enter n:" ); Scanner sc = new Scanner ( System . in ); int n = sc . nextInt (); for ( int i = n ; i != 0 ; i -- ){ System . out . println ( i ); } } }

  package code . mypack ; import java . util . Scanner ; public class src { public static void main ( String [] args ) { System . out . println ( "Enter n:" ); Scanner sc = new Scanner ( System . in ); int n = sc . nextInt (); for ( int i = 0 ; i < n ; i ++ ){     System . out . println ( 2 * i + 1 ); } }}

  package code . mypack ; import java . util . Scanner ; public class src { public static void main ( String [] args ) { System . out . println ( "Enter n:" ); Scanner sc = new Scanner ( System . in ); int n = sc . nextInt (); for ( int i = 1 ; i <= n ; i ++ ) {     if ( i % 2 != 0 ){     System . out . println ( i );     } } } }

  package code . mypack ; import java . util . Scanner ; public class src { public static void main ( String [] args ) {     System . out . println ( "Enter n:" );     Scanner sc = new Scanner ( System . in );     int n = sc . nextInt ();     int i = 1 ;     do {         System . out . println ( i );         i ++ ;     } while ( i <= n ); } }

  package code . mypack ; public class src { public static void main ( String [] args ) {     int i = 100 ;     while ( i <= 200 ) {   System . out . println ( i );       i ++ ;         } } }

  package code . mypack ; import java . util . Scanner ; import java . util . Random ; public class game { public static void main ( String [] args ) { System . out . println ( "Enter your choice:(rock,paper,scissors)" ); Scanner sc = new Scanner ( System . in ); String choice = sc . nextLine (); Random ran = new Random (); int rand = ran . nextInt ( 3 ); System . out . println ( rand ); String mychoice = "" ; switch ( rand ) {     case 0 :         mychoice = "rock" ;         break ;     case 1 :         mychoice = "paper" ;         break ;     case 2 :         mychoice = "scissors" ;         break ;     default:     System . out . println ( "invalid" );         break ; }   if ( choice . equals ( "paper" ) && mychoice . equals ( "rock" )){     System ...

  package code . mypack ; import java . util . Scanner ; public class src { public static void main ( String [] args ) {     System . out . println ( "enter URL:" ); Scanner sc = new Scanner ( System . in ); String url = sc . nextLine (); if ( url . endsWith ( ".com" )){ System . out . println ( "it is a commercial website" ); } else if ( url . endsWith ( ".org" )){     System . out . println ( "it is an organisation website" ); } else if ( url . endsWith ( ".in" )){     System . out . println ( "it is an Indian website" ); } } }

  package code . mypack ; import java . util . Scanner ; public class src { public static void main ( String [] args ) {     System . out . println ( "Enter year:" );     Scanner sc = new Scanner ( System . in );     int year = sc . nextInt ();     if (( year % 4 == 0 && year % 100 != 0 ) || year % 400 == 0 ) {         System . out . println ( "It is a leap year" );     }     else     System . out . println ( "It is not a leap year" ); } }

  package code . mypack ; import java . util . Scanner ;; public class src { public static void main ( String [] args ) {     System . out . println ( "enter n:" ); Scanner sc = new Scanner ( System . in ); int n = sc . nextInt (); switch ( n ) {     case 1 -> System . out . println ( "Monday" );     case 2 -> System . out . println ( "Tuesday" );     case 3 -> System . out . println ( "Wednesday" );     case 4 -> System . out . println ( "Thursday" );     case 5 -> System . out . println ( "Friday" );     case 6 -> System . out . println ( "Saturday" );     case 7 -> System . out . println ( "Sunday" ); } } }

  package code . mypack ; import java . util . Scanner ; public class src { public static void main ( String [] args ) {     System . out . println ( "Enter income in lakhs:" ); Scanner sc = new Scanner ( System . in ); float income = sc . nextFloat (); float tax ; if ( income >= 2.5f && income <= 5f ) { tax = ( income - 2.5f ) * 0.05f ;     System . out . println ( "tax to be paid in lakhs:" + tax ); } else if ( income > 5f && income <= 10.0f ) {     tax = ( income - 5f ) * 0.2f ;     System . out . println ( "tax to be paid in lakhs:" + tax ); } else if ( income > 10.0f ){     tax = ( income - 10f ) * 0.3f ;     System . out . println ( "tax to be paid in lakhs:" + tax ); } else {     System . out . println ( "no tax" ); } } }

  package code . mypack ; import java . util . Scanner ; public class src { public static void main ( String [] args ) { Scanner sc = new Scanner ( System . in ); System . out . println ( "enter marks:" ); int   Englishmarks = sc . nextInt (); int   Telugumarks = sc . nextInt (); int     Hindimarks = sc . nextInt (); float total = ( Englishmarks + Telugumarks + Hindimarks ) / 3f ; System . out . println ( "percentage:" + total ); if ( Englishmarks >= 33 && Telugumarks >= 33 && Hindimarks >= 33 && total >= 40 ) {     System . out . println ( "pass" ); } else {     System . out . println ( "fail" ); } } }

  package code . mypack ; public class src { public static void main ( String [] args ) { int a = 10 ; switch ( a ) {     case 10 ->         {             System . out . println ( "be happy" );         }     case 12 -> {         System . out . println ( "enjoy!!!" );     }     } } }

  package code . mypack ; import java . util .* ; public class src { public static void main ( String [] args ) {     System . out . println ( "Enter a:" );     Scanner sc = new Scanner ( System . in );     int a = sc . nextInt ();     System . out . println ( "Enter b:" );       int b = sc . nextInt (); System . out . println ( "enter operand:" ); char operand = sc . next (). charAt ( 0 ); switch ( operand ){     case '+' :               System . out . println ( a + b );               break ;     case '-' :               System . out . println ( a - b );                 break ; case '*' :               System . out . println ( a * b );               break ; case '/' :   ...

  package code . mypack ; import java . util .* ; public class src { public static void main ( String [] args ) {     System . out . println ( "enter age:" );   Scanner sc = new Scanner ( System . in );   int age = sc . nextInt ();     if ( age < 10 ){     System . out . println ( "you are a child" );    }     else if ( age >= 10 && age < 20 ){     System . out . println ( "you are a teenager" );    }     else if ( age >= 20 && age < 38 )    {     System . out . println ( "you are middle aged" );    }     else if ( age >= 38 && age < 60 ){     System . out . println ( "you are old" );    }     else {     System . out . println ( "very old aged" );    } } }

  package code . mypack ; import java . util .* ; public class src {     public static void main ( String [] args ) {     System . out . println ( "enter age:" );   Scanner sc = new Scanner ( System . in );   int age = sc . nextInt (); if ( age > 18 ) {     System . out . println ( "you can vote" ); } else {     System . out . println ( "you cannot vote" ); } }     }

  package code . mypack ; public class escape {     public static void main ( String [] args ){         String text = "Dear Abhi \n\t call me later!! \n thanks" ;         System . out . println ( text );     } }

  package code . mypack ; public class practice3 {     public static void main ( String [] args ){         String txt = "he  l    l  o" ;         System . out . println ( txt . indexOf ( "  " ));                 System . out . println ( txt . indexOf ( "   " ));     } }

package code . mypack ; import java . util .* ; public class practice2 {     public static void main ( String [] args ) {         Scanner sc = new Scanner ( System . in );         String name = sc . nextLine ();         System . out . println ( "Dear " + name + " thanks a lot" );     } } OR package code . mypack ; public class practice2A {         public static void main ( String [] args ) {     String text = "Dear <|name|> thanks a lot " ;     System . out . println ( text . replace ( "<|name|>" , "abhi" ));     } }

    //converting spaces to _     package code . mypack ; public class practice {     public static void main ( String [] args )     {       String text = " conver  t t" ;       System . out . println ( text . replace ( " " , "_" ));     } }

  public class first { public static void main ( String [] args ) { String name = "Abhi" ; System . out . println ( name ); // .length()  returns the length of a string int a = name . length (); System . out . print ( "length:" ); System . out . println ( a ); //or System . out . println ( name . length ()); // .toLowerCase() converts the string to lower case System . out . print ( "name:" ); String lcase = name . toLowerCase (); System . out . println ( lcase ); //or System . out . println ( name . toLowerCase ()); // .toUpperCase() converts the string to upper case System . out . print ( "name:" ); String ucase = name . toUpperCase (); System . out . println ( ucase ); //or System . out . println ( name . toUpperCase ()); //.trim() removes the whitespaces String nontrimmedname = "    Abhi  " ; System . out . println ( nontrimmedname ); System . out . print ( "trimmed name:" ); System . out . println ( nontrimmedna...