spring - @Component vs new operator in java -

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i new spring concept, have little confusion @component default singleton creates instance whenever class loaded , same instance reused; same happens new operator. if class declared singleton can change properties of class using setters , getters same new operator also.

when call new , creating instance during runtime manually.

assume , have controller being called 'n' number of times im turn calls service.

java

in plain java, creating new object calling new. means , creating 'n'number of objects

spring

in spring, when deploy application in server or load spring xml/configuration class, spring creates instances of classes annotated , , stores in spring container. now,even if controller called 'n'times, spring use same object again , again because wont call new instead use annotation called autowired


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