Remove all objects in an arraylist that exist in another arraylist Java

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Remove all objects in an arraylist that exist in another arraylist Java - pre>
ArrayListlt;Stringgt; firstArr = new ArrayListlt;gt;;
firstArr.addquot;1quot;;
`java
ArrayList firstArr = new ArrayList();
firstArr.add(“1”);
firstArr.add(“2”);
firstArr.add(“3”);

// array/list to be removed from firstArr
ArrayList filterArr = new ArrayList();

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