B1

Java-Calculator.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

src/firstcalculator/b1.java

@@ -0,0 +1,17 @@
+package firstcalculator;
+
+public class b1 {
+    int income;
+
+    public int getIncome() {
+        return income;
+    }
+
+    public void setIncome(int income) {
+        this.income = income;
+    }
+
+    public b1(int income) {
+        this.income = income;
+    }
+}

src/firstcalculator/master.java

@@ -0,0 +1,18 @@
+package firstcalculator;
+
+public class master {
+    int roll;
+
+    public master(int roll) {
+        this.roll = roll;
+    }
+
+    public int getRoll() {
+        return roll;
+    }
+
+    public void setRoll(int roll) {
+        this.roll = roll;
+    }
+
+}