Day 8 Training

 Java: 

Structure: 

import java.util.*;

public class Main

{

public static void main(String[] args) {

System.out.println("Hello World");

}

}

Variables and types: 

Data types: 

Operators and operands:

control statements: 

if if else for while do while 

Input in java: 

import java.util.*;

class Main{

public static void main(String args[]){

Scanner sc = new Scanner(System.in);

String name = sc.nextLine();

System.out.println("Name is :"+name);

}

}

Other data types: 

sc.nextInt();

sc.nextFloat();

sc.nextLong();

sc.nextBoolean();

sc.next().charAt();

import java.util.*;

class Main{

public static void main(String args[]){

Scanner sc = new Scanner(System.in);

int n = sc.nextInt();

//sc.nextLine();

String name = sc.nextLine();

System.out.println("Name is :"+name);

System.out.println("Name is :"+n);

}

}

Arrays in java: 

int arr[] = {1,2,3};

int myarr[] = new int[5];

for each loop: 

for(int i: arr){

System.out.println(i);

}

import java.util.*;

public class Main

{

    

public static void main(String[] args) {

int arr[]= new int[3];

arr[0]=1;

arr[1]=5;

arr[2]=2;

for(int i:arr)

System.out.println(i);

}

}

Functions :

import java.util.*;

public class Main

{

    static int sumofnums(int a,int b){

        return a+b;

    }

public static void main(String[] args) {

System.out.println(sumofnums(1,2));

}

}