java forEach特性

Journey of for loop in Java, for(index) to forEach().

public class JavaForEach {
	public static void main(String[]args){
		List<String>listNames= Arrays.asList("Tom","Jerry");
		//java 1.4
		for (int i=0;i<listNames.size();i++)System.out.println(listNames.get(i));
   			//java 1.5
		for (String name:listNames)System.out.println(name);
		//java 1.8
		listNames.stream().forEach(System.out::println);
	}
}