equals() and equalsIgnoreCase()

String Comparision:

The String class includes many methods that compares Strings or Substrings within strings.

equals() and equalsIgnoreCase()


package stringdemo;


public class StringComparision {
    public static void main(String[] args) {
        String str="john";
        String str1="john";
        String str2="JOHN";
        String str3=new String("john");
        
        
        if(str==str1){
            System.out.println("Equal");
        }else{
        System.out.println("Not Equal");
        }
        
        if(str.equals(str1)){
            System.out.println("str is equal to str1");
        }else{
        System.out.println("str is not equal to str1");
        }
        
        if(str==str2){
        System.out.println("str is equal to str2");
        }else{
        System.out.println("str is not equal to str2");
        }
        
        if(str.equals(str2)){
            System.out.println("equals");
        }else{
        System.out.println(" not equals");
        }
        if(str.equalsIgnoreCase(str2)){
        System.out.println("equalsss");
        }else{
        System.out.println(" not equalsss");
        }
        
        if(str1==str3){
            System.out.println("str1 is equal to str3");
        }else{
        
        System.out.println("str1 is not  equal to str3");
        }
        
        if(str.equals(str3)){
            System.out.println("bang");
        }else{
            System.out.println("not bang");
        }
        }
    }

   
    The output of the above program is as below:

Equal
str is equal to str1
str is not equal to str2
 not equals
equalsss
str1 is not  equal to str3
bang