JAVA Program 5

Prime Number Program in Java :-

public class PrimeNumber{    
public static void main(String args[]){    
int i,m=0,flag=0;      
int n=3;//it is the number to be checked    
m=n/2;      
if(n==0||n==1){  
System.out.println(n+" is not prime number");      
}else{  
for(i=2;i<=m;i++){      
if(n%i==0){      
System.out.println(n+" is not prime number");      
flag=1;      
break;      
}      
}      
if(flag==0) 
{ System.out.println(n+" is prime number"); }  
}//end of else  
}    
}   

Output:

3 is prime number

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