In this article we will learn about for loop in Java.
The Java for loop is used to iterate a part of the program several times. If the number of iteration is fixed, it is recommended to use for loop.
Here, i=1 is an initialization from where the for loop starts. i<=5 condition where for loop ends. i++ is incrementation which increment the i variable in each iteration.
Remember that in this for loop variable i is accessible only through this for loop. Outside of for loop variable i is not accessible.
2. for each loop
Syntax
for(Type var:array){
//code to be executed
}
Program
publicclass foreach
{
publicstaticvoid main(String args[])
{
int arr[] = {11, 22, 33, 44, 55};
for(int i : arr)
{
System.out.println(i);
}
}
}
Explanation
In this for each we can say variable i as container for array element. In every iteration of loop index of array is incremented and that element is stored in container.
3. Labbled for loop
Syntax
labelname:
for(initialization;condition;incr/decr){
//code to be executed
}
Program
publicclass labled_for
{
publicstaticvoid main(String args[])
{
iloop:
for(int i=1; i<=5; i++)
{
jloop:
for(int j=1; j<=5; j++)
{
if(j==3) break jloop;
System.out.println(i + "-" + j);
}
}
}
}
Explanation
Here, we named for loop with variable i as iloop and for loop with variable j as jloop. When condition i==3 becomes true iloop will break while jloop continue to iterate.
Infinite for loop
If you use two semicolons ;; in the for loop, it will be infinitive for loop.
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