Vishakha Umale

  Naming Convention : A naming convention is  a convention for naming things: Please find below the table for naming conventions: Naming Convention Format Example Camel Case camelCase 🐪aBcD Kebab Case kebab-case 🍢a-b-c-d Snake Case snake_case 🐍a_b_c_d Pascal Case PascalCase 🧑‍🦳AbCd Flat Case flatcase 📏abcd Upper Flat Case UPPERFLATCASE ABCD Screaming Snake Case SCREAMING_SNAKE_CASE 🐍A_B_C_D Camel Snake Case camel_Snake_Case 🐪🐍ab_Cd Pascal Snake Case Pascal_Snake_Case Ab_Cd Train Case Train-Case 🚃Ab-Cd Cobol Case COBOL-CASE 🍢AB-CD

 NVL: The NVL function allows you to replace null values with a default value.  Simple explanation: if( first parameter's value==null ) then return second parameter value if( first parameter's value!=null) then return first parameter as is Example: nvl("xyz","")---->return xyz nvl(null,'xyz') ------------>return xyz

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 Add items in shopping cart: We are using ArrayList Code: import java.util.*; public class Main {  public static void main (String[]args)   {     ArrayList < String > items = new ArrayList < String > ();     Scanner sc = new Scanner (System.in);       items.add ("folder");       items.add ("flower");       items.add ("Car");       items.add ("Bottle");       items.add ("Mask");       items.add ("Box");       System.out.println ("Shopping card items");       System.out.print (items);       System.out.println ("Enter item which you want:");       String rmv = sc.nextLine ();       items.remove (rmv);       System.out.println ("Shopping card items");       System.out.print (items);   } } Output: Shopping card items   ...

 Count-ways-reach-nth-stair-using-step-1-2 Code:     public class Main{     static int fib(int n)     {         if(n<=1)         return n;        return fib(n-1)+fib(n-2);     }     static int ways(int n)     {         return fib(n+1);     } public static void main(String[] args) { System.out.println("count-ways-reach-nth-stair-using-step-1-2:"+ways(8)); } } Output:  count-ways-reach-nth-stair-using-step-1-2:8   #tcs nqt question count-ways-reach-nth-stair-using-step-1-2:8

Find number is present in Array or Not // Java code  import  java.util.*; class   A  {      static   boolean   exists ( int []  ints ,  int   k ) {          boolean   found = false ;          for ( int   n : ints){              if (n==k){                 found= true ;                  break ;             }         }          return  found;     }      public   static   void   main ( String []  args ){ ...

  Fibonacci series Code: import java.util.Scanner; class Main{     public static void main(String anyVar[]){         Scanner sc=new Scanner(System.in);         System.out.println("Enter any number till that yu want Fibonacci series:");         int num=sc.nextInt();         System.out.println("Fibonacci series till "+num+"is as follows:");         int num1=1,num2=1,num3=0;         for(int i=0;i<num;i++){            if(i==0||i==1)             System.out.print(1);             else{                 //Fibonacci number is sum of previous two Fibonacci number                 num3=num1+num2;                 num1=num2;           ...

  Array:  1.String array class Main{ /*Every application in Java must contain the main method. The Java compiler starts executing the code from the main method*/     public static void main(String anyVar[]){                  String [] array={"1","2","3"};          System.out.println("default values of string array:"+array);          System.out.println("values for string array\nstring array[0]:"+array[0]+"\nstring array[1]:"+array[1]+     "\nstring array[2]:"+array[2]);      } Output: default values of string array:[Ljava.lang.String;@2a139a55                                                ...

Array:  1.int array class Main{ /*Every application in Java must contain the main method. The Java compiler starts executing the code from the main method*/     public static void main(String anyVar[]){                  int [] array={1,2,3};          System.out.println("default values of int array:"+array);          System.out.println("values for int array\nint array[0]:"+array[0]+"\nint array[1]:"+array[1]+"\nint array[2]:"+array[2]);      } Output: default values of int array:[I@2a139a55                                                            ...

  Simple java code class Main{ /*Every application in Java must contain the main method. The Java compiler starts executing the code from the main method*/      public static void main(String anyVar[]){      System.out.println("Simple java code");       } } Output: Simple java code Screenshot: Online compiler:https://www.onlinegdb.com/online_java_compiler #happyCoding💁👍

First code in Apache Beam word count example: Word count .java file-> package com.test.training; import org.apache.beam.sdk.Pipeline; import org.apache.beam.sdk.io.TextIO; import org.apache.beam.sdk.options.PipelineOptions; import org.apache.beam.sdk.options.PipelineOptionsFactory; import org.apache.beam.sdk.transforms.Count; import org.apache.beam.sdk.transforms.DoFn; import org.apache.beam.sdk.transforms.Filter; import org.apache.beam.sdk.transforms.FlatMapElements; import org.apache.beam.sdk.transforms.MapElements; import org.apache.beam.sdk.transforms.ParDo; import org.apache.beam.sdk.values.KV; import org.apache.beam.sdk.values.PCollection; import org.apache.beam.sdk.values.TypeDescriptors; public class BasicWordCountWithExplaination { public static void main(String[] args) { // Create a PipelineOptions object. This object lets us set various execution     // options for our pipeline, such as the runner you w...

code Snippets What will be the output of the following programs? ???? //static var 1.int x = 10;    static int y = x; //infinite loop     2.  for (i = 1; i != 10; i += 2)    {      printf ( " hi " );    } 3.int i = 20,j;      i = ( printf ( "Hello" ), printf ( "dear... " ));      printf ( "%d" , i);