Java iteration

Introduction

Honestly I can't understand how to write a class at all (irrelevant to this content)

Iterative processing

Iterative processing is a process that automatically repeats a certain process ** while ** statement and ** for ** statement

`kane.java`


while(conditions){
Repeated processing;
}

for(conditions){
Repeated processing;
}

`kane.java`


int = 1;                     //Initialization

while(i <= 5){ //conditions
 System.out.println(i);      //Repeated processing
 i++;                        //Variable update that adds 1
}

for(int i = 1; i <= 5; i++){ //Initialization, conditions, updates can be written together
 System.out.println(i);      //Repeated processing
}

If you forget to add ** 1 to the variable **, the variable remains ** 1 **, and the condition becomes ** forever true **, so the iteration process is performed infinitely (infinite loop).

break In order to end the repetition, there is a method of forcibly ending ** using ** break other than setting the ** condition to false **. By combining with conditional branching such as if statement, iterative processing can be ended at any place.

`kane.java`


for(int i = 1; i <= 10; i++){ 
 if (i > 5){ //Forced termination when it reaches 6
  break;
 }
 System.out.println(i);      
}

continue continue can skip only the processing of that lap and execute the next lap. It is common to use continue in combination with if statements.

`kane.java`


for(int i = 1; i <= 10; i++){ 
 if (i % 3 == 0){ //Skip when it is a multiple of 3 and perform the next process
  continue;
 }
 System.out.println(i);      
}

`console`

** Multiples of 3 are skipped **

At the end

28 years old who notices the effect of coffee now.