Proxy Design Patterns

com/javadevjournal/design/structural/proxy/EmployeeInternetAccess.java

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+package javadevjournal.design.structural.proxy;
+
+/**
+ * @author Kunwar
+ */
+public class EmployeeInternetAccess implements InternetAccess {
+    private String employeeName;
+
+    @Override
+    public void grantInternetAccessToEmployees() {
+        System.out.println("Internet Access granted for employee: " + employeeName);
+    }
+
+    public EmployeeInternetAccess(String empName) {
+        this.employeeName = empName;
+    }
+
+    public String getEmployeeName() {
+        return employeeName;
+    }
+
+    public void setEmployeeName(String employeeName) {
+        this.employeeName = employeeName;
+    }
+}

com/javadevjournal/design/structural/proxy/InternetAccess.java

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+package javadevjournal.design.structural.proxy;
+
+/**
+ * @author Kunwar
+ */
+public interface InternetAccess {
+    public void grantInternetAccessToEmployees();
+}  

com/javadevjournal/design/structural/proxy/ProxyEmployeeInternetAccess.java

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+package javadevjournal.design.structural.proxy;
+
+/**
+ * @author Kunwar
+ */
+public class ProxyEmployeeInternetAccess implements InternetAccess {
+    private String employeeName;
+    private EmployeeInternetAccess employeeInternetAccess;
+
+    public ProxyEmployeeInternetAccess(String employeeName) {
+        this.employeeName = employeeName;
+    }
+
+    @Override
+    public void grantInternetAccessToEmployees() {
+        if (getRole(employeeName) > 4) {
+            employeeInternetAccess = new EmployeeInternetAccess(employeeName);
+            employeeInternetAccess.grantInternetAccessToEmployees();
+        } else {
+            System.out.println("No Internet access granted. Your job level is below 5");
+        }
+    }
+
+    public int getRole(String empName) {
+        //make a DB call to get the employee role and return it.
+        return 31;
+    }
+}  

com/javadevjournal/design/structural/proxy/ProxyPatternClient.java

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+package javadevjournal.design.structural.proxy;
+
+/**
+ * @author Kunwar
+ */
+public class ProxyPatternClient {
+
+    public static final String EMPLOYEE_NAME = "Aayush Sharma";
+
+    public static void main(String[] args) {
+        InternetAccess internetAccess = new ProxyEmployeeInternetAccess(EMPLOYEE_NAME);
+        internetAccess.grantInternetAccessToEmployees();
+    }
+}