All simple java programs

Top 100+ Java Programming Examples With Output

Java Programming Examples With Output | Learn Java Programming Language through examples. Develop java basic programs to understand the basic concepts of Java. These are the basic Java program examples with output. After learning the procedure to develop the program try to develop it on your own and then compare the code given on the website. This page contains frequently, unique, and popular Java programs. For all Java programs visit here:- Java Program List

Java Basic Programs

1. Java Hello World program
2. Java Addition Program
3. Average of Two Numbers
4. Total & Average of 3 Subjects
5. Calculate Simple Interest

1. Calculate Compound Interest
2. Display ASCII value in Java
3. Calculate Area of Circle in Java
4. Find Area of Rectangle in Java
5. Find the Area of Triangle in Java

1. Swapping two Numbers in Java
2. Distance Between 2 Points in Java
3. Simple Mortgage Calculator in Java
4. Miles to Kilometers Java Program
5. Unit Conversion Java Program

Java Programming Examples on Flow Control

Java flow control programs are based on conditional control statements (if, if-else and switch-case), loop control statements (while loop, do-while loop, for-loop), and Jump control statements (continue, and break). This section contains multiple Java programs. Some of them are formula-based programs, programs on different types of numbers, different types of printing patterns, flow-control-based conversion programs, and e.t.c.

1. Java code to Check Even Odd
2. Find the Greatest of 3 numbers
3. How to Find exponents in Java
4. Students’ Grades using Switch Case
5. Iterate digits of a number

1. Leap year program in Java
2. Print Multiplication table
3. Find Reverse of a number
4. Find Factors of a number
5. LCM of two numbers in Java

1. HCF of two numbers in Java
2. Roots of a quadratic equation
3. Square Root of a Number
4. Perfect Square Program
5. Print 1 to 100 Without Loop

1. Simple Calculator Program
2. BMI (Body Mass Index) Calculator
3. Electric Bill Java Program
4. Find runtime of a Java Program
5. Factorial of a Number in Java
6. Golden Ratio Java Program

1. Even Number in Java
2. Odd Number in Java
3. Prime Number in Java
4. Twin prime Number
5. Magic Number in Java

1. Armstrong Number
2. Palindrome Number
3. Perfect Number Java
4. Spy Number in Java
5. Tech Number in Java

1. Sunny Number in Java
2. Automorphic Number
3. Krishnamurthy Number
4. Evil Number in Java
5. Strong Number in Java

1. Disarium Number Java
2. Neon Number in Java
3. Pronic Number in Java
4. Duck Number in Java
5. Harshad Number Java

1. Kaprekar Number Java
2. Buzz Number in Java
3. Nelson Number in Java
4. Special Number in Java

Array Programs in Java

1. Find Length of Array in Java
2. Different ways to Print Array
3. Find the Sum of Array in Java
4. Average in Java using Array
5. Sum of Two Arrays Elements

1. Compare Two Arrays in Java
2. Copy Array in Java
3. Merge Two Arrays in Java
4. Merge Two Sorted Arrays
5. Largest Number in Array

1. Smallest Number in Array
2. 2nd Largest Number in Array
3. How to Sort an Array in Java
4. Reverse an Array in Java
5. GCD of N Numbers in Java

1. Find the LCM of an Array in Java
2. Linear Search in Java
3. Binary Search Program in Java
4. Remove Duplicates From the Array
5. Insert Element at Specific Position

1. Add Element to Array in Java
2. Remove Element From Array in Java
3. Count Repeated Elements in an Array
4. How To Reduce The Size Of An Array In Java
5. Find Odd Occurrence Number Array in Java

1. Java Primitive Array To Wrapper Array
2. Java Array of Random Numbers
3. Find the Median of an Array in Java

• How To Print An Array In Java In One Line
• How To Append An Array In Java

Multi-dimensional array and Matrix Programs in Java

1. Print 2D array in Java
2. Program to Print 3×3 Matrix
3. Sum of matrix elements in Java
4. Sum of Diagonal Elements of Matrix
5. Row sum and Column sum of Matrix

1. Fill 2D Array With Random Numbers
2. Sort 2D Array In Java
3. Java Magic Square 2D Array
4. Java Count Occurrences in 2D Array
5. How to Find Minimum Value in 2D Array Java

1. Matrix Addition in Java
2. Subtraction of two matrices in Java
3. Transpose of a Matrix in Java
4. Matrix Multiplication in Java
5. Menu-driven program for Matrix operations

Java Programming Examples on String

1. Take String Input using Scanner
2. How to Find Length of String in Java
3. Length of String Without length()
4. How to Iterate through String Java
5. Java For Each Character In String

1. Sum of digits in a String
2. Count No of Vowels String
3. String Pattern Programs in Java
4. How To Reverse a String In Java
5. String Palindrome In Java

1. Sort String In Java
2. How to Compare Strings In Java
3. Check If Char is Uppercase
4. Check If String is Uppercase Java
5. String Contains Uppercase or Lowercase

1. Swap Characters in String Java
2. Generate Random Strings
3. Java Program to Find Weight of String
4. Find the Second Occurrence of Character
5. Find the Last Occurrence of Character

1. Split String By Line in Java
2. Compare Strings Alphabetically Java
3. Put Quotes in a String Java
4. Java String Parsestring
5. How to Check if String is Empty Java

1. How to Compare String to Enum Java
2. How to Concat Int to String in Java
3. New Line In Java String
4. Find Repeating Pattern In String Java
5. Java Set Character in String

1. Appending String In Java
2. Concat Strings in Java
3. Java String Interpolation

String Programs on Replace/Remove

Conversion of/to String Programs in Java

String Array Programs

Java Programming Examples on Collection

1. Print Vowels & Consonants in String
2. Convert Comma Separated String to List Java
3. Convert Pipe Delimited String to List Java
4. How To Find Repeated Characters In A String In Java
5. Cast Object to List String in Java
6. Java Convert Object List To String List

1. Java Convert String List To Array
2. Java String Array to String List
3. Convert Map to String Java
4. Convert String to Map Java
5. Join List Of Strings in Java

• Java.lang.integer Cannot Be Cast To Java.lang.boolean
• Convert Integer To Byte In Java
• Compare Integer And Int Java
• Java Convert Integer To Short and Vice-Versa
• How To Reverse an Integer in Java
• Java Integer compareTo() Method
• Integer.compare() in Java
• How To Compare String And Integer In Java
• Print Byte Array in Java
• Convert Integer To Char in Java
• Java Integer decode() Method
• Convert Byte Array To Integer In Java
• Int vs Integer in Java
• Int to Integer in Java
• Convert Integer To Int in Java
• Integer To Double in Java
• Java Integer getInteger() Method
• Java Integer hashCode() Method
• Java List Integer To Int Array
• Integer To Long in Java
• Java Integer parseInt() Method
• Long Data Type In Java
• Short Data Type in Java

Others

More Programs are coming soon, keep visiting. Subscribe to our newsletter and follow us on Facebook, Instagram, and Twitter to receive the latest tutorial and programs to improve your programming skills.

Источник

Simple Java Programs for Beginners Example

Simple Java Programs for Beginners Example: If you’re looking to get into coding, learning Java is a great place to start. It’s a stable and popular programming language that can be used in many different industries. And once you know how to code in Java, it becomes easier to reuse that code for other purposes.

In this article, we will explore some of the Simple Java Programs for understanding the fundamentals of basic Java programming. Java is a versatile language that can be used for building a variety of applications. In order to code in Java, everything must be contained within a class. Once you have created your class, you can save it with a .java extension.

Coding-related questions are common in interviews, so it is beneficial to have a strong foundation in the basics of Java programming. In order to increase your coding skills or knowledge, you can check this Simple Java Program for Beginners with Examples and output.

Post Type:	Java Programs For Beginners
Published On:	www.softwaretestingo.com
Applicable For:	Freshers & Experience
Get Updates:	Join Our Telegram Group

Simple Java Programs for Beginners

How to Write Text File Using Jautva Selenium With Example Program?

package com.selenium.mix; import java.io.BufferedWriter; import java.io.File; import java.io.FileWriter; import java.io.IOException; public class WriteTextFile < public static void main(String[] args) throws IOException < // TODO Auto-generated method stub File f=new File("G:\\Git_Base_Folder\\softwaretestingblog\\Selenium\\src\\com\\selenium\\mix\\Selenium Text"); FileWriter fw=new FileWriter(f); BufferedWriter bw=new BufferedWriter(fw); bw.write("Welcome to My Testing Blof"); bw.newLine(); bw.write("www.softwareteastingblog.in"); bw.close(); >>

Write a Program To Find out Parent Reference Implementation.

package com.java.Softwaretestingblog; class ab < public void a() < System.out.println("Inside Method A"); >> public class ParentReference extends ab < public void a() < System.out.println("Inside Overriding Method A"); >public void b() < System.out.println("Inside Method B"); >@SuppressWarnings("unused") public static void main(String[] args) < //ab obj=new ab(); //obj.a(); ab abc=new ParentReference(); abc.a(); ParentReference abx=new ParentReference(); //abx.a(); //abx.b(); //ParentReference aby=new ab(); >>

Execution: The Parent Reference Final output link

Inside Overriding Method A

How to Remove Spaces From Sentence In Java With Example?

package com.java.Softwaretestingblog; public class RemoveSpaceInASentence < public static void main(String[] args) < // Remove Spaces Java Program String str = "For More Testing Interview Questions Visit Software Testing Blog "; System.out.println("Entered String:- "+str); //1. Using replaceAll() Method String strWithoutSpace = str.replaceAll("\\s", ""); System.out.println("Remove Space With Using Replaceall Method:- "+strWithoutSpace); //Output : ForMoreTestingInterviewQuestionsVisitSoftwareTestingBlog //2. Without Using replaceAll() Method char[] strArray = str.toCharArray(); StringBuffer sb = new StringBuffer(); for (int i = 0; i < strArray.length; i++) < if( (strArray[i] != ' ') && (strArray[i] != '\t') ) < sb.append(strArray[i]); >> System.out.println("After Remove The Space From The Sentence:- "+sb); //Output : CoreJavajspservletsjdbcstrutshibernatespring > >

Entered String:- For More Testing Interview Questions Visit Software Testing Blog Remove Space With Using Replaceall Method:- ForMoreTestingInterviewQuestionsVisitSoftwareTestingBlog After Remove The Space From The Sentence:- ForMoreTestingInterviewQuestionsVisitSoftwareTestingBlog

Write a Program to Find out Widening In Java Example Program?

package com.java.Softwaretestingblog; public class WideningExample < public static void main(String[] args) < // TODO Auto-generated method stub //Conversion lower ro higher is called wideining //byte->short->int->float->long->double int i = 100; //automatic type conversion long l = i; //automatic type conversion float f = l; System.out.println("Int value "+i); System.out.println("Long value "+l); System.out.println("Float value "+f); > >

Int value 100 Long value 100 Float value 100.0

Non-Repeated & First Repeated Character Using HashMap

How to Find First Repeated & Non-Repeated Character In Java?

package com.softwaretestingblog.programs; import java.util.HashMap; import java.util.Scanner; public class Non_Repeated_Character < static void firstRepeatedNonRepeatedChar(String inputString) < //Creating a HashMap containing char as a key and occurrences as a value HashMapcharCountMap = new HashMap(); //Converting inputString to char array char[] strArray = inputString.toCharArray(); //Checking each char of strArray for (char c : strArray) < if(charCountMap.containsKey(c)) < //If char is present in charCountMap, incrementing it's count by 1 charCountMap.put(c, charCountMap.get(c)+1); >else < //If char is not present in charCountMap, //adding this char in charCountMap with 1 as it's value charCountMap.put(c, 1); >> //checking for first non-repeated character for (char c : strArray) < if (charCountMap.get(c) == 1) < System.out.println("First Non-Repeated Character In '"+inputString+"' is '"+c+"'"); break; >> //checking for first repeated character for (char c : strArray) < if (charCountMap.get(c) >1) < System.out.println("First Repeated Character In '"+inputString+"' is '"+c+"'"); break; >> > public static void main(String[] args) < @SuppressWarnings("resource") Scanner sc = new Scanner(System.in); System.out.println("Enter the string :"); String input = sc.next(); firstRepeatedNonRepeatedChar(input); >>

Differential Object Java Program

Simple Java Program Object With Example?

package com.java.Softwaretestingblog; class top < int b=20; void m1() < System.out.println("Inside Super Class"); >> public class DifferentialObject < public static void main(String[] args) < // TODO Auto-generated method stub new top(); new top().b=30; //System.out.println(b); //Differential Objects Can't be Outside top obj=new top(); obj.b=30; System.out.println("The Value Of B:- "+obj.b); >>

How to Find Pair Elements In an Array In Java With Example Program?

package com.softwaretestingblog.programs; public class PairOfElementsInArray < static void findThePairs(int inputArray[], int inputNumber) < System.out.println("Pairs of elements whose sum is "+inputNumber+" are : "); for (int i = 0; i < inputArray.length; i++) < for (int j = i+1; j < inputArray.length; j++) < if(inputArray[i]+inputArray[j] == inputNumber) < System.out.println(inputArray[i]+" + "+inputArray[j]+" EnlighterJSRAW" data-enlighter-language="null" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">Pairs of elements whose sum is 10 are : 4 + 6 = 10 5 + 5 = 10 -10 + 20 = 10

Write a Program to Find Distinct Element Using POJO [Getter & Setter] Class Java?

package com.java.Softwaretestingblog; import java.util.HashSet; public class FindDistinctElement < public static void main(String[] args) < // TODO Auto-generated method stub HashSetlhm = new HashSet(); lhm.add(new Price("Banana", 20)); lhm.add(new Price("Apple", 40)); lhm.add(new Price("Orange", 30)); for(Price pr:lhm) < System.out.println(pr); >Price duplicate = new Price("Banana", 20); System.out.println("inserting duplicate object. "); lhm.add(duplicate); System.out.println("After insertion:"); for(Price pr:lhm) < System.out.println(pr); >> > class Price < private String item; private int price; public Price(String itm, int pr)< this.item = itm; this.price = pr; >public int hashCode() < System.out.println("In hashcode"); int hashcode = 0; hashcode = price*20; hashcode += item.hashCode(); return hashcode; >public boolean equals(Object obj) < System.out.println("In equals"); if (obj instanceof Price) < Price pp = (Price) obj; return (pp.item.equals(this.item) && pp.price == this.price); >else < return false; >> public String getItem() < return item; >public void setItem(String item) < this.item = item; >public int getPrice() < return price; >public void setPrice(int price) < this.price = price; >public String toString() < return "item: "+item+" price: "+price; >>

In hashcode In hashcode In hashcode item: Apple price: 40 item: Orange price: 30 item: Banana price: 20 inserting duplicate object. In hashcode In equals After insertion: item: Apple price: 40 item: Orange price: 30 item: Banana price: 20

Write a Program to Find Out Sum Of Digits In Java Program?

package com.java.Softwaretestingblog; import java.util.Scanner; public class SumOfDigits < public static void main(String[] args) < // TODO Auto-generated method stub Scanner in=new Scanner(System.in); System.out.println("Enter the number"); int sum=0,n,a; n=in.nextInt(); while(n>0) < a=n%10; n=n/10; sum=sum+a; >System.out.println("Sum of digits EnlighterJSRAW" data-enlighter-language="null" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">Enter the number: 1254 Sum of digits=12

How To Open Exe Files In Java Example Program?

package com.java.interviewFAQ; import java.io.IOException; public class RunExeFiles < public static void main(String[] args) throws IOException < Runtime.getRuntime().exec("C:\\Windows\\notepad.exe"); >>

This Java interview questions and answers tutorial will help you crack your next Java interview. We’ve covered Simple Java Programs questions and answers that are frequently asked by interviewer. With this guide, you’ll be ready to tackle any question thrown your way.

If you’re struggling with these java programs, please leave a comment below. In addition to this article on Simple Java Programs for Beginners, if you come across any other interview questions, please let us know in the comment section and we’ll update the article accordingly.

Источник