title: How calculate hashCode of a Pojo by combining hashCodes of it's keys
body: <p>Consider i have one POJO having String class members :</p>
  
  <pre><code>class POJO {
    String name, address, emailId;
    equals() {
  
    }
    hashCode() {
      // How?    
    }
  }
  </code></pre>
  
  <p>How can i combine <code>hashCode</code>s of my strings to form a <code>hashCode</code> for POJO?</p>