if (s1.isEmpty() == true || s1.equals(s2) == true) { }
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A boolean is a data type that returns one value either true or false.
Here, boolean expression in if statement uses logical OR operator that returns true or 1 only if any of the two conditions s1.isEmpty() or s1.equals(s2) evaluates to True.
| s1.isEmpty() | s1.equals(s2) | Result |
| true | true | true |
| true | false | true |
| false | true | true |
| false | false | false |
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