WASHINGTON — The White House on Thursday said that it expected intelligence officials to provide a classified briefing to Donald J. Trump after the Republican Party formally nominates him for president at its convention in July, a tradition for major party nominees dating back to 1952.

Asked whether President Obama was concerned about Mr. Trump’s receiving classified information in light of the presumptive Republican nominee’s reputation for making unfiltered comments, Josh Earnest, the White House press secretary, said the president would leave it to intelligence professionals to decide what to share with him.

“Those are assessments that will have to be made by the intelligence community, and the president has full confidence in the ability of our professionals in the intelligence community to make those assessments,” Mr. Earnest said.