How to jump from one service to the activity?

How to jump from one service to the activity?
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jump to the activity more than the activity set a
intentv.setFlags (Intent.FLAG_ACTIVITY_NEW_TASK);
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Intent intent = new Intent (Service.this, BActivity.class);
intentv.setFlags (Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity (intent);
What is this ?
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Service.this this direct write this it
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Yes, I try !