Java - For Statement

About

The for statement is a part of the control flow possibility of Java.

The Iterable interface must be implemented in order to use it. See for example: Java - Iterator Implementation

Property

Index

During a for loop, this is no shortcut syntax to get the index. You need to create it

int index = 0;
for (String s: strings){
  System.out.println("The current index is "+index);
  assert s == strings.get(index): "Error";
  // Increment
  index++
}

Syntax

General

for (initialization; termination; increment) {
    statement(s)
}

Enhanced

for (datatype variable : collections or array) {
    statement(s)
}

Infinite

for ( ; ; ) {
    
    // your code goes here
}

Skip

The continue statement skips the current iteration of a for loop.

Example

Counter

for(int i=1; i<11; i++){
    System.out.println("Count is: " + i);
}

Array

Java - Array

int[] anArray= {1,2,3,4,5,6,7,8,9,10};
for (int i = 0; i < anArray.length; i++) {
	System.out.println(i+" : "+anArray[i]);
}

Documentation / Reference


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