Jim Cramer gained confidence in the Federal Reserve on Wednesday and breathed a sigh of relief. From his perspective, the Fed proved it has a brain and recognized that its job is take action when it is really needed — not just when the stock market is hooting and hollering.

The Fed confirmed it would not adhere to the four-rate-hike plan for 2016 that officials laid out in December. It finally deterred from the notion that hiring is all that matters in the U.S., and what might be more important is for people to make higher wages.

Cramer also liked the way the Fed described the economy: it was a little better, but industrial production is lousy and the strong dollar has hurt business.

"That is exactly what we wanted to hear," the "Mad Money" host said.

The Fed's decision allowed not only allowed the stock market to go higher, but the dollar went lower. That was such an important event; Cramer officially retired calling it "the super-freaking strong dollar" because it is no longer soaring against the euro.

This could mark the beginning of a potential renaissance for big industrials, drug companies, packaged goods plays and technology enterprises that do a lot of business in Europe.

"When it comes to the euro, with the Fed's newfound softer tone, the war against the dollar seems to have ended, and that's a big deal," Cramer said.

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With the Fed out of the way for the time being, Cramer reviewed the potential biggest winners.

First, technology companies with exposure to Europe, such as Oracle, will be winners. He likes all the cloud stocks, with Oracle being the cheapest, Workday the most expensive and Salesforce.com somewhere in between.

He also thinks packaged goods stocks and drug companies will be winners, like Johnson & Johnson. While it reported subpar numbers recently, he thinks that will change with the dollar out of the equation.

Finally, Apple has $50 billion in European sales, 21 percent of its overall revenues. Cramer only wants to own Apple, not trade it. After a close reading on Apple's conference call, Cramer found that 21 percent of its sales have been hurt by the dollar's strength. That means there could be a chance for a big earnings bump when the company reports.

Watching the euro gain strength makes Cramer believe that the days of companies claiming "constant currency" adjustments in earnings and foreign exchange based excuses could be over at last.

And while there will always be naysayers who believe that the Fed is making a big mistake by not suggesting more rate hikes, Cramer did not agree.

"I find their illogic tiresome, and I praise the Fed for being measured and thoughtful," Cramer said.

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