You can also loop through an ArrayList with the for-each loop:Example public class Main { public static void main(String[] args) { ArrayList<String> cars = new ArrayList<String>(); cars.add("Volvo"); cars.add("BMW"); cars.add("Ford"); cars.add("Mazda"); for (String i : cars...
// 1. for loop System.out.println("1. For loop"); for(inti =0; i < lst.size(); ++ i) { System.out.println(lst.get(i)); } // 2. advanced for loop System.out.println("2. Advanced For loop"); for(intval : lst) { System.out.println(val); } // 3. iterator loop Syste...
* 1. Simple For loop * 2. Enhanced For loop * 3. Iterator * 4. ListIterator * 5. While loop * 6. Iterable.forEach() util * 7. Stream.forEach() util */publicclassCrunchifyIterateThroughList{publicstaticvoidmain(String[] argv){// create listList<String> crunchifyList =newArrayList<S...
packagecom.callicoder.arraylist;importjava.util.ArrayList;importjava.util.List;publicclassCreateArrayListExample{publicstaticvoidmain(String[] args){// Creating an ArrayList of String// 创建字符串的ArrayListList<String> animals =newArrayList<>();// Adding new elements to the ArrayList// 向ArrayList中...
publicclassWhileLoopDemo{ publicstaticvoidmain(String[] args){ intcount =1;// 1. 初始化 while(count <=5) {// 2. 终止条件 System.out.println("Count is: "+ count);// 循环体 count++;// 3. 更新循环控制变量 ...
Add UsersLoop through ListCreateUserListFillUserListExtractNamesOutputNames 序列图 序列图可以更好地展示对象之间的交互: NameArrayUserListMainNameArrayUserListMaincreate userListadd User(Alice)add User(Bob)add User(Charlie)create namesArrayget User namesfill namesArrayprint names ...
与ArrayList不同,LPL是通过Position类来保持位置,通过这个来访问底层元素的。所以我们如果如果允许用户对列表的位置展开迭代,我们应该也允许用户对其中的元素进行访问。也就是说,我们实现迭代器应该始终是对列表中的元素进行迭代。这样的话,如下的for loop代码才能成立 ...
Loop Through a HashMap Loop through the items of aHashMapwith afor-eachloop. Note:Use thekeySet()method if you only want the keys, and use thevalues()method if you only want the values: Example // Print keysfor(Stringi:capitalCities.keySet()){System.out.println(i);} ...
In other words, this method behaves exactly as if it simply performs the call wait(0).The current thread must own this object's monitor. The thread releases ownership of this monitor and waits until another thread notifies threads waiting on this object's monitor to wake upeither through a ...
// Loop through the elementsfor (int i = 0; i < array.length; i++) {// process each element} 5.空行: 在方法之间、类的成员之间使用空行,使代码更具可读性。 public class MyClass {private int variable1;private int variable2;public void method1() {// code here}public void method2()...