java - How to get absolute path of existing folder -

i have test data folder in java project... this

project

• src folder
• testdata folder

how can data folder using java, have hardcoded in constant, using ci tool , want avoid hardcoded path.

its fine hardcode testdata folder, point should relative path:

at top of test class can write

static final string test_path = "./testdata/"; 

note relative project.

if want convert such relative path absoulte one:

string absolutetestpath = new file(test_path).getabsolutepath();