Project

package calculator;

import java.util.Scanner;

public class calculator {

public static void main(String[] args) {
char operator;
int num1,
num2;
Scanner sc=new Scanner(System.in);
System.out.println("choose an operator +,-,*,%");
operator=sc.next().charAt(0);

System.out.println("enter your 1st digit");
num1=sc.nextInt();
System.out.println("enter your second digit");
num2=sc.nextInt();
if(num1==num2) {
int sum = num1+num2;
System.out.println("addition"+(num1+num2));
}
else if(num1==num2) {
int sum= num1+num2;
System.out.println("addition"+(num1-num2));
}
else if(num1==num2) {
int sum= num1+num2;
System.out.println("addition"+(num1%num2));
}
else if(num1>=num2) {
int sum=num2+num1;
System.out.println("multiplication"+num1*num2);

}
if(num1<num2) {
int sum=num1/num2;
System.out.println("division"+num2/num1);
}
switch(operator) {
case 1:
num1=num1+num2;
System.out.println(num1+num2);
break;
case 2:
num2=num1+num2;
System.out.println(num1+num2);
break;
case 3:
num2=num1*num2;
System.out.println(num1*num2);
break;
case 4:
num2=num1/num2;
System.out.println(num1/num2);
break;
case 5:
num2 =num1%num2;
System.out.println(num1%num2);
break;
default:
System.out.println("its a invalid....");
}
}
}

output:

choose an operator +,-,*,%
+,*,/,%.
enter your 1st digit
1452
enter your second digit
235458
division162
its a invalid....

package calculator;

import java.util.Scanner;
import java.lang.Math;
public class clac {

// use the square root in java..
public static void main(String[] args) {
int x,
y;

Scanner sc=new Scanner(System.in);

System.out.println("enter the 1st code");
x=sc.nextInt();
System.out.println("enter your 2nd code");
y=sc.nextInt();
int square= (int) Math.pow(x,2);
int nth=(int) Math.pow(x,2);
int log=(int) Math.pow(x,2);
int logn=(int) Math.pow(x,2);

int sin=(int) Math.pow(x,2)+(int) Math.pow(y,2);
int isin=(int) Math.pow(y,2)+(int) Math.pow(x,2);
int cos= (int) Math.pow(x,2)+(int) Math.pow(y,2);
int tan= (int) Math.pow(y,2)+(int) Math.pow(x,2);
int itan=(int) Math.pow(x,2)+(int) Math.pow(y,2);
int stor=(int) Math.pow(y,2)+(int) Math.pow(x,2);
int recall= (int) Math.pow(y,3)+(int) Math.pow(x,2);
int d2b = (int) Math.pow(x,5)+(int) Math.pow(y,2);
int b2b=(int) Math.pow(y,2)+((int) Math.pow(x,2));
int sip=(int) Math.pow(x,2)+(int) Math.pow(y,2);

System.out.println("tan"+tan);
System.out.println("");
System.out.println("logn"+logn);
System.out.println("");
System.out.println("square"+square);
System.out.println("");
System.out.println((""+sip)+(+b2b));
System.out.println("");
System.out.println("log"+log);
System.out.println("");
System.out.println("tan"+tan);
System.out.println("");
System.out.println("cos"+cos);
System.out.println("");
System.out.println("isin"+isin);
System.out.println("");
System.out.println("recall"+recall);
System.out.println("");
sc.close();

}

}

output....

enter the 1st code
25
enter your 2nd code
24
tan1201

logn625

square625

12011201

log625

tan1201

cos1201

isin1201

recall14449