JAVA

java how to compare strings

System.out.println("hey".equals("hey")); //prints true

/*
	always use .equals() instead of ==,
    because == does the compare the string content but
    loosely where the string is stored in.
*/

in java how to compare two strings

class scratch{
    public static void main(String[] args) {
        String str1 = "Nyello";
        String str2 = "Hello";
        String str3 = "Hello";

        System.out.println( str1.equals(str2) ); //prints false
        System.out.println( str2.equals(str3) ); //prints true
    }
}

compareto in java string

******Java String compareTo()******

  The Java String class compareTo() method compares the given 
  string with the current string lexicographically. 
  It returns a positive number, negative number, or 0.
  ___________________________________________
  	if s1 > s2, it returns positive number  
	if s1 < s2, it returns negative number  
	if s1 == s2, it returns 0  
  ___________________________________________
  
  

compare function in java

        Collections.sort(marvelHeroes, new Comparator<String>() {
            @Override
            public int compare(String hero1, String hero2) {
                return hero1.compareTo(hero2);
            }
        });

        Collections.sort(marvelHeroes, (m1, m2) -> m1.compareTo(m2));

        Collections.sort(marvelHeroes, Comparator.naturalOrder());

compare function in java

class Simpson implements Comparable<Simpson> {
    String name;

    Simpson(String name) {
        this.name = name;
    }

    @Override
    public int compareTo(Simpson simpson) {
        return this.name.compareTo(simpson.name);
    }
}

compare function in java

 	   SimpsonCharacter homer = new SimpsonCharacter("Homer") {
            @Override
            public int compareTo(SimpsonCharacter simpson) {
                return this.name.length() - (simpson.name.length());
            }
        };

string comparison using == in java

In Java Strings, the == operator is used to check the reference of both the string objects.
Use .equals method instead:
str1.equals(str2)