Java Loops

Java supports the following three types of loop:

• for loop
• while loop
• do-while loop

A loop repeatedly executes the same set of instructions till the termination condition is met. As you will see that Java has a loop to fit any programming need.

Java for Loop

A for loop is a repetition control structure which allows you to efficiently write a loop that needs to execute a specific number of times. You will learn more about Java for loop in separate tutorial.

Java while Loop

A while loop is a control structure that allows you to repeat a task, certain number of times. You will learn more about Java while loop in separate tutorial.

Java do-while Loop

A do-while loop is similar to a while loop, but there is only one difference, i.e., except that a do-while loop is guaranteed to execute at least one time. You will learn more about Java do-while loop in separate tutorial.

Java for-each for loop

As of Java 5, the enhanced for loop was introduced. This is mainly used for Arrays. You will learn more about Java for-each for loop in separate tutorial.

And, here the below two statements are used to control the loop.

Java break Statement

The break keyword is used to stop the entire loop. You will learn more about Java break statement in separate tutorial.

Java continue Statement

The continue keyword can be used in any loop control structures. It causes the loop to directly jump to the next iteration of the loop. You will learn more about Java continue statement in separate tutorial.

Examples

Here are some example programs that uses loops:

• Check Prime or Not
• Check Palindrome or Not
• Check Armstrong or Not
• Check Reverse equal Original or Not
• Add Digits of Number
• Calculate Average & Percentage Marks
• Calculate Arithmetic Mean
• Calculate Student Grade
• Print Table of Number
• Print Prime Numbers
• Add n Numbers
• Reverse Numbers
• Swap two Numbers
• Count Positive, Negative & Zero
• Find Factorial of Number
• Find HCF & LCM
• Print ASCII Values
• Print Fibonacci Series
• Generate Armstrong Numbers
• Find ncR & nPr
• Decimal to Binary Conversion
• Decimal to Octal Conversion
• Decimal to Hexadecimal Conversion
• Binary to Decimal Conversion
• Binary to Octal Conversion
• Binary to Hexadecimal Conversion
• Octal to Decimal Conversion
• Octal to Binary Conversion
• Octal to Hexadecimal Conversion
• Hexadecimal to Decimal Conversion
• Hexadecimal to Binary Conversion
• Hexadecimal to Octal Conversion
• Pattern Printing Programs
• Print Diamond Pattern
• Print Floyd Triangle
• Print Pascal Triangle
• One Dimensional Array Program
• Linear Search
• Binary Search
• Find Largest Element in Array
• Find Smallest Element in Array
• Reverse Array
• Insert Element in Array
• Delete Element from Array
• Merge two Array
• Bubble Sort
• Selection Sort
• Insertion Sort
• Two Dimensional Array Program
• Add two Matrices
• Subtract two Matrices
• Transpose Matrix
• Multiply two Matrices
• Three Dimensional Array Program
• Check Anagram or Not
• Generate Random Numbers

There are too many example programs that uses loops. Loop is a most important topic of Java or other programming language.

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