Java Program Statements

[last updated: 2019-06-13]
go to: Java
go to: Java Notes
-----

• Program control Loops:
  Some instructions in methods are "loops." There are 3 types of loops in Java: 'while', 'do-while', and 'for' loops:
• 'while' loop syntax:
  while (boolean-expression) {
     [statements] }
  The loop will repeatedly execute 'statements' as long as 'boolean-expression' evaluates to true.
• 'do-while' loop syntax:
  do {
     [statements] }
  while (boolean-expression);
  Similar to a while loop, except that the do-while loop statements will always execute at least once, because the boolean-expression is evaluated after the first do execution.
• 'for' loop syntax:
  for (initialization; boolean-expression; update-increment) {
     [statements] }
  For example:
     initialization might be: a = 1,
     boolean-expression might be: a < 10
     and update-increment might be: a = a + 1.
  In this example, each time through the loop, a will be increased by 1
  and the loop will be repeated until a < 10 is false.
• break & continue statements:
• If a 'break;' statement occurs in a loop, execution stops immediately and proceeds to the first statement after the loop.
• If a 'continue;' statement occurs in a for-loop, execution jumps immediately to the next update statement.
• If a 'continue;' statement occurs in a while or do-while loop, execution jumps immediately to the boolean-expression test.

.

.

.


eof