check if two strings are equal in java

1//This expression is true if str1 and str2 are equal, and false if they're not
2str1.equals(str2)
3
4//example use case:
5String location = "London";
6String destination = "London";
7if (location.equals(destination)) {
8	System.out.println("You have arrived!");
9}

1System.out.println("hey".equals("hey")); //prints true
2
3/*
4	always use .equals() instead of ==,
5    because == does the compare the string content but
6    loosely where the string is stored in.
7*/

1// compare two strings in java using String.equals() method in java
2public class EqualsMethodDemo
3{
4   public static void main(String[] args)
5   {
6      String str1 = new String("HelloWorld");
7      String str2 = new String("Flower");
8      String str3 = new String("Hello");
9      String str4 = new String("Hello");
10      String str5 = new String("hello");
11      // compare str1 != str2
12      System.out.println("Compare " + str1 + " and " + str2 + ": " + str1.equals(str2));
13      // compare str3 = str4
14      System.out.println("Compare " + str3 + " and " + str4 + ": " + str3.equals(str4));
15      // compare str4 != str5
16      System.out.println("Compare " + str4 + " and " + str5 + ": " + str4.equals(str5));
17      // compare str1 != str4
18      System.out.println("Compare " + str1 + " and " + str4 + ": " + str1.equals(str4));
19   }
20}

1String1.equals(String2)

1public class EqualsMethodDemo
2{
3   public static void main(String[] args)
4   {
5      String str1 = new String("HelloWorld");
6      String str2 = new String("Flower");
7      String str3 = new String("Hello");
8      String str4 = new String("Hello");
9      String str5 = new String("hello");
10      // compare str1 != str2
11      System.out.println("Compare " + str1 + " and " + str2 + ": " + str1.equals(str2));
12      // compare str3 = str4
13      System.out.println("Compare " + str3 + " and " + str4 + ": " + str3.equals(str4));
14      // compare str4 != str5
15      System.out.println("Compare " + str4 + " and " + str5 + ": " + str4.equals(str5));
16      // compare str1 != str4
17      System.out.println("Compare " + str1 + " and " + str4 + ": " + str1.equals(str4));
18   }
19}