So I want the result to be "Today Blue" and "Tomorrow Red" how can I do that by looping?
String[] sections = { "Blue", "Red" }; String[] stringDay = { "Today", "Tomorrow" }; for(String sectionsLoop : sections) { System.out.println(stringDay + " " + sectionsLoop); } 
public static void main(String... args) { String[] selection = new String[] {"Blue","red"}; String[] day = new String[] {"today","tomorrow"}; for(int i = 0 ; i < s.length ; ++i) { System.out.println(day[i] + " " + selection[i]); } } 
You can use the traditional for loop but you have to make sure both arrays from the same size or do the below to prevent arrayOutOfIndex
int size = sections.length > stringNumber.length ?sections.length : stringNumber.length; for (int i = 0; i <size ; i++) { if (sections.length < i) { System.out.println(sections[i]); } if (stringNumber.length < i) { System.out.println(stringNumber[i]); } } 
for(int i = 0; i < Math.min(sections.length, stringNumber.length); i++)for (int i = 0; i < sections.length && i < stringDay.length; i++) { System.out.println(stringDay[i] + " " + sections[i]); }