java - How to create an application log and save it? -

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this question has answer here:

i have android application , want save error logs in file can solve errors , bugs , know happening users while using app. how can make this?

this guide through of it; https://blogs.oracle.com/nickstephen/entry/java_redirecting_system_out_and

the main focus point rebinding of system.out , system.err output streams goto file. with;

system.setout()

and

system.seterr()

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