Swastik pattern using java

import java.util.Scanner;
class Swastik{
		
		public static void main(String args[])
		{
				Scanner sc = new Scanner(System.in);
				System.out.println("Enter number");
				int num = sc.nextInt();
				for(int i=1;i<=num;i++)
				{
						for(int j=1;j<=num;j++)
						{
								if((j==1 && i<=num/2) || (j==num/2) || (i==num/2)||(i==1 && j>=num/2) || ((i==num/2 || j==num) && i>num/2) || (i==num && j<=num/2))
								{
										System.out.print("*");
								}
								else
									System.out.print(" ");
						}
						System.out.println();
				}
		}
}

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Matrix multiplication

import java.util.Scanner;
class MatrixMul{
		public static void main(String args[])
		{
				int a[][]= new int[3][3];
				int b[][]= new int[3][3];
				int c[][]=new int[3][3];
				int i,j,k;
				
				Scanner sc = new Scanner(System.in);
				System.out.println("enter Element 9 of 1st String");
				for(i=0;i<3;i++)
				{
						for(j=0;j<3;j++)
						{
								a[i][j]=sc.nextInt();
						}
				}
				
				System.out.println("enter Element 9 of 2nd String");
				for(i=0;i<3;i++)
				{
						for(j=0;j<3;j++)
						{
								b[i][j]=sc.nextInt();
						}
				}
				
				System.out.println("Matrix A\tMatrix B");
				for(i=0;i<3;i++)
				{
						for(j=0;j<3;j++)
						{
								System.out.print(a[i][j]+" ");
						}
						
						System.out.print("\t\t");
						
						for(k=0;k<3;k++)
						{
								System.out.print(b[i][k]+" ");
						}
						System.out.println();
				}
				
				//logic for multiply
				
				int mul=0;
				for(i=0;i<3;i++)
				{
						for(j=0;j<3;j++)
						{
								
								for(k=0;k<3;k++)
								{
										mul+= a[i][j]*b[j][k];
								}
								
								c[i][j]=mul;
								mul=0;
						}
			
				}
				
				System.out.println("Result is:");
				for( i=0;i<3;i++)
				{
						for(j=0;j<3;j++)
						{
								System.out.print(c[i][j]+" ");
						}
						
						System.out.println(" ");
				}
				
		}
}

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Arrange String character wise

import java.util.Scanner;
class StringCharSort{
		
		public static void main(String args[])
		{
				Scanner sc = new Scanner(System.in);
				System.out.println("Enter a String:");
				String str = sc.nextLine();
				char ch[] = str.toCharArray();
				for(int i=0;i	for(int j=1;j
						{
								if(ch[j-1]>ch[j])
								{
										char temp = ch[j-1];
										ch[j-1]=ch[j];
										ch[j]=temp;
								}
						
						}
						
				}
				for(char c :ch)
							{
									System.out.print(c);
							}
				
		}
		
}

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How to check given String is palindrom or not in java

String is palindrom or not

import java.util.Scanner;
class StringPalindrom{
  public static void main(String args[]){
    Scanner sc = new Scanner(System.in);
    System.out.println("Enter a line");
    String str = sc.nextLine();
    String str1="";
    char ch[] = str.toCharArray();
    for(int i=ch.length-1;i>=0;i--)
    {
      str1+=ch[i];
    }
     if(str.equals(str1))
      System.out.println("Palindrom");
     else
      System.out.println("Not palindrom");
    
    
  }
}

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Differences Between C , C++, and Java

Table Comparing C, C++ and Java:

This table is a summary of the differences found in the article.

Feature	C	C++	Java
Programming Approach	Procedural Programming Language	Procedural, OOP, Generic Programming languages	OOP, Generic Programming languages.
Compiled Source Code	Executable in  Native Code	Executable in Native Code	Compiled into Java byte code
Memory management	Manual Done,	Manual Done,	Managed, using a garbage collector
Pointers	Yes, very commonly used.	Yes, very commonly used, but some form of references available too.	No pointers; references are used instead.
Preprocessor	Yes	Yes	No
String Type	Character arrays	Character arrays, objects	Objects
Complex Data Types	Structures, unions	Structures, unions, classes	Classes
Inheritance	N/A	Multiple class inheritance	Single class inheritance, multiple interface implementation
Operator Overloading	N/A	Yes	No
Automatic coercions (Conversion)	Yes, with warnings if loss could occur	Yes, with warnings if loss could occur	Not at all if loss could occur; must cast explicitly
Variadic Parameters	Yes	Yes	No
Goto Statement	Yes	Yes	No

 

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