inicial proyect

.classpath

+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

.gitignore

+/bin/

.project

+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>calculadora</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

src/calculadora/Calculadora.java

+/**
+ * 
+ */
+package calculadora;
+
+import jdk.internal.org.objectweb.asm.tree.TryCatchBlockNode;
+
+/**
+ * @author crist
+ *
+ */
+public class Calculadora {
+	
+	float a;
+	float b;
+	
+	
+	
+	public Calculadora(float a, float b) {
+		this.a = a;
+		this.b = b;
+	}
+	
+	
+	public float getA() {
+		return a;
+	}
+
+
+	public void setA(float a) {
+		this.a = a;
+	}
+
+
+	public float getB() {
+		return b;
+	}
+
+
+	public void setB(float b) {
+		this.b = b;
+	}
+
+
+	public float suma() {
+		try { 
+			return this.a+this.b;
+		} catch (Exception e) {
+			// TODO: handle exception
+			System.out.println(e);
+		}
+		
+		return 0;
+	}
+	public float resta () {
+		try { 
+			return this.a-this.b;
+		} catch (Exception e) {
+			// TODO: handle exception
+			System.out.println(e);
+		}
+		
+		return 0;
+	}
+	public float multiplicacion() {
+		try { 
+			return this.a*this.b;
+		} catch (Exception e) {
+			// TODO: handle exception
+			System.out.println(e);
+		}
+		
+		return 0;
+	}
+	public float division() {
+		try { 
+			return this.a/this.b;
+		} catch (Exception e) {
+			// TODO: handle exception
+			System.out.println(e);
+		}
+		
+		return 0;
+	}
+	public float mod() {
+		try { 
+			return (this.a%this.b);
+		} catch (Exception e) {
+			// TODO: handle exception
+			System.out.println(e);
+		}
+		
+		return 0;
+	}
+	
+	
+	public boolean esPrimoA() {
+
+		if(esPrimo(this.a)) {
+			return true;
+		}else {
+			return false;
+		}
+	}
+	public boolean esPrimoB() {
+
+		if(esPrimo(this.b)) {
+			return true;
+		}else {
+			return false;
+		}
+	}
+	
+	
+	
+	
+	
+	
+	public static boolean esPrimo(float numero) {
+		if(numero==0) {
+			return false;
+		}
+		if(numero==1) {
+			return true;
+		}
+		
+		for (int i = 2; i < numero; i++) {
+			
+			if(numero%i==0) {
+				return false;
+			}
+			
+		}
+		return true;
+	}
+	
+	
+	
+	
+
+}

src/calculadora/Main.java

+/**
+ * 
+ */
+package calculadora;
+
+import java.util.Scanner;
+
+/**
+ * @author crist
+ *
+ */
+public class Main {
+
+	/**
+	 * @param args
+	 */
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		boolean bandera= false;
+		Scanner scan =  new Scanner(System.in);
+		float numero1=0;
+		float numero2=0;
+		System.out.println("Ingrese dos nmeros");
+		System.out.println("Numero 1:");
+		while(!bandera) {			 
+			 try {
+				 numero1= scan.nextFloat();
+				 bandera=true;
+				
+			} catch (Exception e) {
+				// TODO: handle exception
+				System.out.println("Ingrese de nuevo numero 1: ");
+			}
+		
+		}
+		System.out.println("Numero 2:");
+		while(bandera) {			 
+			 try {
+				 numero2= scan.nextFloat();
+				 bandera=false;
+				
+			} catch (Exception e) {
+				// TODO: handle exception
+				System.out.println("Ingrese de nuevo numero 2: ");
+			}
+		
+		}
+		System.out.println("numero1 vale: "+ numero1);
+		System.out.println("numero1 vale: "+ numero2);
+		Calculadora cal = new Calculadora(numero1,numero2);
+		System.out.println("la suma de numero1 + numero2 es: "+cal.suma());
+		System.out.println("la resta de numero1 - numero2 es: "+cal.resta());
+		System.out.println("la multiplicacion de numero1 * numero2 es: "+cal.multiplicacion());
+		System.out.println("la division de numero1 / numero2 es: "+cal.division());
+		System.out.println("el mod de numero1 & numero2 es: "+cal.mod());
+		System.out.println("el numero 1 es primo?: "+ cal.esPrimoA());
+		System.out.println("el numero 2 es primo?: "+ cal.esPrimoB());
+	}
+
+}