private static void test() { List<String> names = new ArrayList<String>() {{ add("Hello"); add("World"); add("Good"); }}; System.out.println("foreach循环"); for (String name : names) { System.out.println(name); }
public static void main(String[] args){ for(int i = 0;i<4;i++){ System.out.println("hello java"); } } } 1. 2. 3. 4. 5. 6. 7. root@debian:/home/jeff/java_coding/day004# java myfor hello java hello java hello java hello java 1. 2. 3. 4. 5. for循环执行过程 class...
When you know exactly how many times you want to loop through a block of code, use the for loop instead of a while loop:SyntaxGet your own Java Server for (statement 1; statement 2; statement 3) { // code block to be executed }...
classForLoopExample { publicstaticvoidmain(String args[]){ for(inti=10; i>1; i--){ System.out.println("The value of i is: "+i); } } } 输出: 1 2 3 4 5 6 7 8 9 The value of i is:10 The value of i is:9 The value of i is:8 The value of i is:7 The value of ...
Test.java 文件代码: publicclassTest{publicstaticvoidmain(String[]args){intx=10;while(x<20){System.out.print("value of x :"+x);x++;System.out.print("\n");}}} 以上实例编译运行结果如下: value of x:10value of x:11value of x:12value of x:13value of x:14value of x:15value of...
Java是一种常用的编程语言,它被广泛应用于各种软件开发领域。下面是关于使用多个条件语句、while循环、for循环和if语句的问题的答案: 1. 多个条件语句:多个条件语句是指在程序中需要根据不...
For-Each 是 Java5 中引入的另一种数组遍历技术,它以类似于常规for循环的关键字开头具有以下特点: 无需声明和初始化循环计数器变量,而是声明一个与数组的基本类型相同类型的变量,然后是冒号,然后是冒号,然后是数组名。 在循环主体中,可以使用创建的循环变量,而不是使用索引数组元素。
// while loop with clumsy looking syntax String line;while((line = reader.readLine()) != null) { System.out.println(line);}reader = new BufferedReader(new InputStreamReader(LoopElimination.class.getResourceAsStream("/testfile.txt")));// less clumsy syntax reader.lines().forEach(l ->...
Java for-loop statement is used to iterate over the arrays or collections using a counter variable that is incremented after each iteration.
首先,来看看classic for loop. List<String> birds =new ArrayList<String>() { { add("magpie"); add("crow"); add("emu"); } }; for (int i =0; i < birds.size(); i++) { String bird = birds.get(i); } 这种方式,代码风格还好,可惜的是...