connect to host localhost port 22: Connection refused

While installing hadoop in my local machine , i got following error

ssh -vvv localhost 
OpenSSH_5.5p1, OpenSSL 1.0.0e-fips 6 Sep 2011 
debug1: Reading configuration data /etc/ssh/ssh_config    
debug1: Applying options for * 
debug2: ssh_connect: needpriv 0 
debug1: Connecting to localhost [127.0.0.1] port 22. 
debug1: connect to address 127.0.0.1 port 22: Connection refused 
ssh: connect to host localhost port 22: Connection refused

can some one help me to resolve this error , than changing port number

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