遍历数组的五种方法

File[] roots = File.listRoots();
//方法1：增强型for循环
for(File root : roots){
System.out.println(root);
}
//方法2：常规for循环
for(int i=0;i System.out.println(roots[i]);
}
//方法3：while循环遍历
int r = roots.length;
int i=0;
while(i System.out.println(roots[i]);
i++;
}
//方法4：do while() 循环遍历
int r1 = roots.length;
int i1=0;
do{
System.out.println(roots[i1]);
i1++;
}while(i1 //方法5：数组转换为集合 Iterator遍历
Set set = new HashSet(Arrays.asList(roots));
Iterator it = set.iterator();
while(it.hasNext()){
System.out.println(it.next());
}