public void setCreateTime(java.util.Date createTime) {
        this.createTime = createTime;
    }
<p>
If you used Amazon EC2 to create the key pair, this is the date and time when the key was created, in <a
href="https://www.iso.org/iso-8601-date-and-time-format.html">ISO 8601 date-time format</a>, in the UTC time
zone.
</p>
<p>
If you imported an existing key pair to Amazon EC2, this is the date and time the key was imported, in <a
href="https://www.iso.org/iso-8601-date-and-time-format.html">ISO 8601 date-time format</a>, in the UTC time
zone.
</p>

@param createTime
       If you used Amazon EC2 to create the key pair, this is the date and time when the key was created, in <a
       href="https://www.iso.org/iso-8601-date-and-time-format.html">ISO 8601 date-time format</a>, in the UTC
       time zone.</p>
       <p>
       If you imported an existing key pair to Amazon EC2, this is the date and time the key was imported, in <a
       href="https://www.iso.org/iso-8601-date-and-time-format.html">ISO 8601 date-time format</a>, in the UTC
       time zone.
aws-java-sdk-ec2/src/main/java/com/amazonaws/services/ec2/model/KeyPairInfo.java