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Java Articles
Page 202 of 450
Java program to find all duplicate characters in a string
The duplicate characters in a string are those that occur more than once. In Java, String is a non-primitive datatype that contains one or more characters and is enclosed in double quotes(“ ”). As per the problem statement, we are given a string and our task is to write a Java program to find all the duplicate characters from that string. We can use for loop and nested for loop to solve this given problem. Example Scenario Input: String str = "Apple"; Output: duplicate_char = p; p is a duplicate character as it occurs more than once. Using ...
Read MoreJava Program to Compare Two Objects
To compare objects in Java, check the properties or the hash value of given objects. If the properties of both objects matches, then they are equal. If either property is different, it indicate that the objects are not equal. NOTE: Don't use equality operator (==) to compare objects as it checks only their memory location. Objects comparison should be done based on the properties not location. How to Compare Objects in Java? To compare two objects in Java, use the following approaches − By overriding equals() method Without overriding equals() method ...
Read MoreJava program to find the Frequency of a character in a given String
For a given a string, write a Java program to find the frequency of a particular character. In Java, String is a datatype that contains one or more characters and is enclosed in double quotes(“ ”). Finding Frequency of a Character in a String To find the Frequency of a character in a given String, follow the below ways − Using for Loop Using Stream API Using for loop In this approach, use the for loop to compare each character in the given string with the character whose ...
Read MoreJava program to find the Frequency of a character in a given String
For a given a string, write a Java program to find the frequency of a particular character. In Java, String is a datatype that contains one or more characters and is enclosed in double quotes(“ ”). Finding Frequency of a Character in a String To find the Frequency of a character in a given String, follow the below ways − Using for Loop Using Stream API Using for loop In this approach, use the for loop to compare each character in the given string with the character whose ...
Read MoreJava Program to Illustrate String Interpolation
String interpolation is a concatenation technique used to display output text dynamically or effectively by replacing the placeholder characters with variables (or strings in the subsequent examples). It restructures the code and prevents the need to repeatedly use variables to produce the output. It makes it efficient to write lengthy variable names or text just by replacing the placeholder with the variable names allocated to strings. String Interpolation in Java There are several ways in Java to perform String Interpolation with the help of the concatenation operator and library function or class. Here, we will discuss four different methods ...
Read MoreJava program to print prime numbers below 100
Any whole number which is greater than 1 and has only two factors i.e. 1 and the number itself, is called a prime number. Other than these two number it has no positive divisor. In this article, we will explain Java programs to print prime numbers between 1 to 100. Few examples of prime numbers are − 2, 3, 5, 7, 11 etc. Steps to Print Prime numbers below 100 Follow the steps below to print prime numbers below 100 in Java − Take integer variable, let's say "A" Divide the variable A with (A-1 to 2) If A ...
Read MoreJava program to print prime numbers below 100
Any whole number which is greater than 1 and has only two factors i.e. 1 and the number itself, is called a prime number. Other than these two number it has no positive divisor. In this article, we will explain Java programs to print prime numbers between 1 to 100. Few examples of prime numbers are − 2, 3, 5, 7, 11 etc. Steps to Print Prime numbers below 100 Follow the steps below to print prime numbers below 100 in Java − Take integer variable, let's say "A" Divide the variable A with (A-1 to 2) If A ...
Read MoreJava program to swap first and last characters of words in a sentence
Problem Statement Given a sentence, create a program in Java that swaps the first and last characters of each word efficiently as given below − Input That is a sample Output The string after swapping the last characters of every word is : thaT si a eampls Steps to swap first and last characters of words in a sentence Below are the steps to swap first and last characters of words in a sentence − Convert string to character array. Iterate through the character array using while loop to identify the ...
Read MoreJava program to delete duplicate characters from a given String
The Set interface does not allow duplicate elements, therefore, create a set object and try to add each element to it using the add() method in case of repetition of elements this method returns false − If you try to add all the elements of the array to a Set, it accepts only unique elements so, to find duplicate characters in a given string. Problem Statement Given a string, write a program in Java to delete duplicate characters from a given string − Input TUTORIALSPOINT Output Indices of the duplicate characters in the given string :: Index :: ...
Read MoreJava program to delete duplicate characters from a given String
The Set interface does not allow duplicate elements, therefore, create a set object and try to add each element to it using the add() method in case of repetition of elements this method returns false − If you try to add all the elements of the array to a Set, it accepts only unique elements so, to find duplicate characters in a given string. Problem Statement Given a string, write a program in Java to delete duplicate characters from a given string − Input TUTORIALSPOINT Output Indices of the duplicate characters in the given string :: Index :: ...
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