Socket and postgreSQL connection problem while connecting spring boot application to postgreSQL in eclipse - postgresql

Question

I am running a maven spring boot application which fetches data from postgreSQL. But I am getting such type of error when I run the project using the command
mvn spring-boot:run
->
2019-05-29 14:37:03.750 WARN 18368 --- [ main] unknown.jul.logger : IOException occurred while connecting to mc:19745
java.net.SocketTimeoutException: connect timed out
2019-05-29 14:36:52.241 ERROR 18368 --- [ main] org.postgresql.Driver : Connection error:
org.postgresql.util.PSQLException: The connection attempt failed.
Caused by: java.net.SocketTimeoutException: connect timed out
2019-05-29 14:36:53.245 ERROR 18368 --- [ main]
com.zaxxer.hikari.pool.HikariPool : HikariPool-1 - Exception during pool initialization.
org.postgresql.util.PSQLException: The connection attempt failed.
I have mentioned only the main errors.
The application.properties file is:
spring.main.banner.mode=/offlinekyc
# Oracle settings
spring.datasource.url=jdbc:postgresql://mc:19745/post
spring.datasource.username=postgre
spring.datasource.password=123
spring.jpa.properties.hibernate.default_schema=oms_owner
spring.thymeleaf.cache=false
spring.jpa.properties.hibernate.dialect= org.hibernate.dialect.PostgreSQLDialect
http.mappers.json-pretty-print=true
spring.jpa.properties.hibernate.jdbc.lob.non_contextual_creation=true
hibernate.discriminator.ignore_explicit_for_joined=false
# create and drop tables and sequences, loads import.sql
spring.jpa.hibernate.ddl-auto= update
spring.datasource.driverClassName=org.postgresql.Driver
# HikariCP settings
# spring.datasource.hikari.*
spring.datasource.hikari.connection-timeout=60000
spring.datasource.hikari.maximum-pool-size=5
#hibernate.dialect=org.hibernate.dialect.PostgreSQL9Dialect
#hibernate.default_schema=oms_owner
#hibernate.show_sql=true
#hibernate.format_sql=true
#hibernate.jdbc.lob.non_contextual_creation=true
spring.jpa.properties.hibernate.temp.use_jdbc_metadata_defaults=false
# Because detection is disabled you have to set correct dialect by hand.
spring.jpa.database-platform=org.hibernate.dialect.PostgreSQL9Dialect
Hibernate.properties file also have the same matter.
Here my post database is in mc:19745 server. I am little confused regarding localhost and server address.
Can anyone help in this matter?