Generate Prime Numbers list between 1 and 100

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package jv.prim;
/**
 * Generate Prime between 1 and 100
 * @author sm rabbi
 */
public class JvPrim {
    /**
     * @param args the command line arguments
     **/
    public static void main(String[] args) {
       
        int a,b,c;
        for(a=1;a<=100;a++)
        {
            c=1;
            for(b=2;b<=a/2;b++)
            {
                if(a%b == 0)
                {
                    c=0;
                    //System.out.println("not prime "+ a + " " + b + " " +a%b);
                    break;
                }
            }
           
            if(c==1)
            {
                System.out.println("prime= " +a);
            }
        }
    }
}
     

Calculator using java

/*

* Write a C program for performing as calculator which allows all Arithmetic Operators with operands from
* terminal

 */
package cb_pr176;
import java.util.Scanner;
/**
 **
 * @author Arif
 **/
public class Cb_pr176 {
    /*
     * @param args the command line arguments
     */
    public static void main(String[] args) {
    // TODO code application logic here
    Scanner inp=new Scanner(System.in);
    int a,b;
    float c = 0;
    char ch;
    System.out.println("Enter Your 1st number:");
    a=inp.nextInt();
    System.out.println("Enter your 2nd number:");
    b=inp.nextInt();
    System.out.println("Enter your choice, example: +, -, *, /");
    ch=inp.next().charAt(0);
    if (ch=='+')
        c=a+b;
    else if(ch=='-')
        c=a-b;
    else if(ch=='/')
        c=(float)a/(float)b;
    else if(ch=='*')
        c=a*b;
    System.out.println("The Result is:" + c);
         
    }
  }