Java Utililty Methods String Equal

boolean areEqual(String expected, String actual)
are Equal

return expected == actual || (expected != null && expected.equals(actual));

boolean areEqual(String s1, String s2)
are Equal

if (s1 == null && s2 == null) {
 return true; 
} else if (s1 == null && s2 != null) {
 return false;
} else {
 return s1.equals(s2);

boolean areEqual(String s1, String s2)
are Equal

return s1 != null ? s1.equals(s2) : s2 == null;

boolean areEqual(String s1, String s2)
are Equal

return toString(s1).equalsIgnoreCase(toString(s2));

boolean areEqual(String seq1, String seq2)
are Equal

return trim(seq1).equals(trim(seq2));

boolean areEqual(String str1, String str2)
are Equal

return (str1 == null && str2 == null) || (str1 != null && str1.equals(str2))
 || (str2 != null && str2.equals(str1));

boolean areEqual(String string1, String string2)
Checks two string instances for equality, allowing for null in either or both strings.

return (compareTo(string1, string2) == 0);

boolean areEqual(String string1, String string2)
Compara doua stringuri

return string1 == null ? (string2 == null ? true : false)
 : (string2 == null ? false : string1.equals(string2));

boolean areEqual(String thisString, String thatString)
are Equal

if (thisString == null) {
 return thatString == null;
} else {
 return thisString.equals(thatString);

boolean areEqualConstantTime(String a, String b)
are Equal Constant Time

boolean equal = true;
if (a.length() != b.length()) {
 equal = false;
for (int i = 0; i < a.length(); i++) {
 if (a.charAt(i % a.length()) != b.charAt(i % b.length())) {
 equal = false;
return equal;