Java Compareto With Code Examples

Java Compareto With Code Examples

Java Compareto With Code Examples

In this lesson, we’ll use programming to try to solve the Java Compareto puzzle. The code shown below demonstrates this.

String s1 = "2"
String s2 = "5"
s1.compareTo(s2); //returns difference between 2 Strings
3 	//returns positive 3 since s2 string is higehr than s1 by 3

As we have seen, the Java Compareto problem was solved by using a number of different instances.

What does compareTo () do in Java?

The compareTo() method compares two strings lexicographically. The comparison is based on the Unicode value of each character in the strings. The method returns 0 if the string is equal to the other string.

How do you make a compareTo in Java?

Java String compareTo() Method Example

  • public class CompareToExample{
  • public static void main(String args[]){
  • String s1=”hello”;
  • String s2=”hello”;
  • String s3=”meklo”;
  • String s4=”hemlo”;
  • String s5=”flag”;
  • System.out.println(s1.compareTo(s2));//0 because both are equal.

How equals () is differ from compareTo ()?

The equals() tells the equality of two strings whereas the compareTo() method tell how strings are compared lexicographically.

What is difference between == equals () and compareTo () method in Java?

The 2 main differences are that: equals will take any Object as a parameter, but compareTo will only take Strings. equals only tells you whether they’re equal or not, but compareTo gives information on how the Strings compare lexicographically.

What is the return type of 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. It compares strings on the basis of the Unicode value of each character in the strings.09-Feb-2022

How is compareTo calculated?

Syntax of compareTo() method

  • compareTo(str2) returns positive number, if str1 > str2.
  • compareTo(str2) returns negative number, if str1 < str2.
  • compareTo(str2) returns 0, if str1 = str2.

Why compareTo () should be consistent to equals () method in Java?

This is because the comparison method of BigDecimal considers only the numeric value, but equals also considers the precision. Since 0.0 and 0.00 have different precisions, they are unequal even though they have the same numeric value. (For an explanation, see this answer.)25-Aug-2012

How do you compare strings?

5 Ways For Comparing Two Strings In Java

  • String Equals Method.
  • String Equals Ignore Case.
  • Object Equals Method.
  • String Compare To Method.
  • Using Double Equal To Operator.

How do you implement the compareTo method?

The compareTo method compares the current object with the object sent as a parameter. When implementing it, we need to make sure that the method returns: A positive integer, if the current object is greater than the parameter object. A negative integer, if the current object is less than the parameter object.08-Feb-2021

What is difference between compare and compareTo in Java?

compareTo(b) : Comparable interface : Compares values and returns an int which tells if the values compare less than, equal, or greater than. compare(a, b) : Comparator interface : Compares values of two objects.07-Jan-2009