publicclassExample{publicstaticvoidmain(String[]args){StringstrArr[]={"aa","bb","cc","dd"};for(inti=0;i<strArr.length;i++){Stringstr=strArr[i];System.out.println(str);}}} Output aa bb cc dd Iterate over String Array using While Loop In this example, we will take a string ar...
public static final String pusfs public static final String $end$; Reverse array iterator ritar for (int $i$ = $array$.length; --$i$ >= 0 ;) { $type$ $var$ = $array$[$i$]; $end$ } Reverse iteration over a list ritli for (int $i$ = $list$.size(); --$i$ >= ...
iterate.forEachRemaining((value) -> System.put.print(value +", ")); Here, we have passed thelambda expressionas an argument of theforEachRemaining()method. Now the method will print all the remaining elements of the array list.
迭代器的使用示例 下面我们通过一个简单的示例来演示如何使用迭代器遍历ArrayList集合中的元素: importjava.util.ArrayList;importjava.util.Iterator;publicclassIteratorExample{publicstaticvoidmain(String[]args){ArrayList<String>list=newArrayList<>();list.add("Apple");list.add("Banana");list.add("Orange");...
Strings1="汉字"; for (int i=0; i<s1.length(); i++){ System.out.println(s1.charAt(i)); } => OK for (char c :s1){ ... } =>Can only iterate over an arrayoraninstanceofjava.lang.Iterable Switch-Case中使用字符串 switch(s){ ...
System.out.println(string); }//4、 ListIterator 双向迭代器, Iterator 的子类型, List 集合特有的方式//ListIterator 双向, 还可以进行 add、remove、set、定位当前索引//ArrayList 和 LinkedList 各自的内部类实现ListIterator<String> listItr =strList.listIterator(); ...
Can only iterate over an array or an instance of java.lang.Iterable at Text.ForeachTest1.main(ForeachTest1.java:15) 1. 2. 3. 4. 事实上,无需等到编译时才发现报错,eclipse会在这段代码写完之后就会在foreach循环处显示错误:Can only iterate over an array or an instance of java.lang.Iterable...
for(int num:numbers){if(num==target){return???;// do not know the index of num}}For-each only iterates forward over the arrayinsingle steps// cannot be converted to a for-each loopfor(int i=numbers.length-1;i>0;i--){System.out.println(numbers[i]);}For-each cannot process two...
StringCharacterIterator implements the CharacterIterator protocol for a String. The StringCharacterIterator class iterates over the entire String. Added in 1.1. Java documentation for java.text.StringCharacterIterator.Portions of this page are modifications based on work created and shared by the Android ...
可能导致内存泄漏 Set<String> set = Collections.unmodifiableSet(new HashSet<String>() {{ add...