java - How do you clear objects between JUnit/Maven tests? -

i'm testing different parts of miniature search engine, , of junit tests leaving entries in index interfere other tests. there convention in junit/maven clearing objects between tests?

there 2 particular annotations can this, , intended used in cases such yours:

@after defines method must executed after every @test, while @afterclass method execute once entire test class has been executed. think of latter last cleanup method purge structures or records you've been using , sharing between tests far.

here example:

@after public void cleanindex() {     index.clear(); //assuming have collection }  @afterclass public void finalcleanup() {     //clean both index and, example, database record. } 

note: have counterparts (@before , @beforeclass) opposite invoking related methods before @test method , before starting execute @tests defined on class. ones setup used in previous versions of junit.

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if can't use annotations, alternative use old teardown method:

public void teardown() {     index.clear(); //assuming have collection. } 

this provided junit framework , behaves method annotated @after.