1. Why is it neccessary to use repetitive and use segment codes to demostrate yo

1. Why is it neccessary to use repetitive and use segment codes to demostrate your understanding of repetitive statement. Explaine why you are choosing one of the following three sratements in your code.1. for statement2. while statement3. do while statement2. Explain your understanding of methods objects classes and object orientented nature of java with the help of segments of codes. Avoid using examples given in the course materials . You can wite your own codes.3. Discuss why data structure is useful and important in programing. Use your own examples to explain what an array is when to use array. You are welcome to discuss problems encountered in your assignments while using arrays a d how you resolved it.