Iteration Statements

• Iteration Statement


  the iteration statements in Java are for, while and dowhile. These statements create loops.
• Iteration Statement


  A loop repeatedly executes the same set of instructions until a termination condition is met.
• For Loop


  is a repetition control structure that allows you to efficiently write a loop that needs to be executed a specific number of times.
• For Loop

  Syntax:

  for (initialization; condition; iteration) {

  // code to be executed repeatedly

  }
• for (int i = 1; i <= 5; i++) {

  System.out.println(i);

  }

  // Print numbers from 1 to 5 using a for loop
• While Loop


  repeatedly executes a target statement as long as a given condition is true.
• While Loop Syntax:

  while (condition) {

  // code to be executed repeatedly

  }
• int i = 1;

  while (i <= 5) {

  System.out.println(i);

  i++;

  }

  // Print numbers from 1 to 5 using a while loop
• Do-While Loop


  • checks its condition at the bottom of the loop.
  • the condition is evaluated after the execution of the loop's body.
• Do-While Loop

  Syntax:

  do {

  // code to be executed repeatedly

  } while (condition);
• int i = 1;

  do {

  System.out.println(i);

  i++;

  } while (i <= 5);

  // Print numbers from 1 to 5 using a do-while loop
• int sum = 0;

  for (int i = 1; i <= 10; i++) {

  sum += i;

  }

  System.out.println("Sum: " + sum);

  55
• int i = 10;

  while (i >= 1) {

  System.out.println(i);

  i--;

  10 - 1
• int i = 2;

  while (i <= 10) {

  System.out.println(i);

  i += 2;

  2 - 10 (even numbers)
• String str = "Hello";

  int i = str.length() - 1;

  do {

  System.out.println(str.charAt(i));

  i--;

  } while (i >= 0);

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