Check out example codes for "loop java". It will help you in understanding the concepts better.

Code Example 1

for (int i = 0; i < 5; i++) {
  System.out.println(i);
}

Code Example 2

//Main two types of loops:
//For loop:
for(/*index declaration*/int i=0; /*runs as long as this is true*/
   i<=5; /*change number at end of loop*/i++){
doStuff();

}
//While loop:
//runs as long as the condition is true
while(condition){
//do what you want in here
doStuff()
}

Code Example 3

// Will continue until condition is true
while (condition) {
  // Code block to be executed
}

// Will loop trough until i = 5 
int i = 0;
while (i < 5) {
  System.out.println(i);
  i++;
}

Code Example 4

int values[] = {1,2,3,4};
for(int i = 0; i < values.length; i++)
{
 	System.out.println(values[i]); 
}

Code Example 5

// Starting on 0:
for(int i = 0; i < 5; i++) {
  System.out.println(i + 1);
}

// Starting on 1:
for(int i = 1; i <= 5; i++) {
  System.out.println(i);
}


// Both for loops will iterate 5 times,
// printing the numbers 1 - 5.

Code Example 6

for (int i = 0; i < 10; i++) {
  System.out.println(i);
}

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