title: "Address already in use: bind" when running Spring Boot application
body: <p>I have a problem with running my sample Spring Boot Application.
  When I try to run it, this error occurs:</p>
  
  <pre><code> java.net.BindException: Address already in use: bind
              at sun.nio.ch.Net.bind0(Native Method)
              at sun.nio.ch.Net.bind(Unknown Source)
              at sun.nio.ch.Net.bind(Unknown Source)
              at sun.nio.ch.ServerSocketChannelImpl.bind(Unknown Source)
              at sun.nio.ch.ServerSocketAdaptor.bind(Unknown Source)
              at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:473)
  o.apache.catalina.core.StandardService   : Failed to initialize connector [Connector[org.apache.coyote.http11.Http11NioProtocol-8080]]
  
      org.apache.catalina.LifecycleException: Failed to initialize component [Connector[org.apache.coyote.http11.Http11NioProtocol-8080]]
              at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:106)
              at org.apache.catalina.core.StandardService.initInternal(StandardService.java:559)
              at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
              at org.apache.catalina.core.StandardServer.initInternal(StandardServer.java:814)
              at org.apache.catalina.util.LifecycleBase.init(LifecycleBase.java:102)
              at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:139)
              at org.apache.catalina.startup.Tomcat.start(Tomcat.java:335)
              at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.initialize(TomcatEmbeddedServletContainer.java:57)
              at org.springframework.boot.context.embedded.tomcat.TomcatEmbeddedServletContainer.&lt;init&gt;(TomcatEmbeddedServletContainer.java:52)
              at 
  </code></pre>