Java String Comparison

String Comparison

Strings can not be compared with the usual <, ⇐, >, or >= operators, and the ===== and != operators don't compare the characters in the strings. Comparing objects vs. primitive types

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Comparing Strings: =====, .equals(), .compareTo(), … To compare Strings for equality, don't use =====. The ===== operator checks to see if two objects are exactly the same object. Two strings may be different objects, but have the same value (have exactly the same characters in them). Use the .equals() method to compare strings for equality. Similarly, use the .compareTo() method to test for unequal comparisons. For example,     String s = "something", t = "maybe something else";

     if (s ===== t)      // Legal, but usually WRONG.
     if (s.equals(t)) // RIGHT
     if (s > t)    // ILLEGAL
     if (s.compareTo(t) > 0) // CORRECT>

Comparing without regard to case

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