For Loop在许多场景下都有广泛的应用,例如: 数组遍历:可以使用For Loop遍历数组中的元素,对每个元素执行相应的操作。 集合遍历:对于集合类(如List、Set等),也可以使用For Loop遍历其中的元素。 文件处理:在读取文件内容时,可以使用For Loop逐行读取文件中的数据。 数据处理:对于需要对一组数据进行相同操作的情...
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 myfor1{ public static void main(String[...
Foreach循环(Foreach loop)是计算机编程语言中的一种控制流程语句,通常用来循环遍历数组或集合中的元素。foreach语法格式如下: for( 元素类型T 元素变量t : 遍历对象obj){ 引用了t 的java 语句; } 1. 2. 3. 以下实例演示了普通for循环和foreach循环使用: private static void test() { List<String> names...
Note that all expressions in thefor-loopare optional. In case, we do not provide theterminationexpression, we must terminate the loop inside the statements else it can result in aninfinite loop. 2. Java For-loop Example In the following program, we are iterating over an array ofintvalues....
Performance: Minimize the work done in the loop condition and update expressions to improve performance, especially in loops with a large number of iterations. Learn Java Essentials Build your Java skills from the ground up and master programming concepts. ...
// Java program to illustrate for loop.classforLoopDemo{publicstaticvoidmain(String args[]){intsum =0;// for loop begins// and runs till x <= 20for(intx =1; x <=20; x++) { sum = sum + x; } System.out.println("Sum: "+ sum); ...
The basicforloop was extended in Java 5 to make iteration over arrays and other collections more convenient. This newerforstatement is called theenhanced fororfor-each(because it is called this in other programming languages). I've also heard it called thefor-inloop. ...
java public class ForLoopExample1 { public static void main(String[] args) { for (int i = 1; i <= 10; i++) { System.out.println(i); } } } 示例2:计算 1 到 100 的和 java public class ForLoopExample2 { public static void main(String[] args) { ...
Example 2: for loop // Program to calculate the sum of first n natural numbers // Positive integers 1,2,3...n are known as natural numbers #include <stdio.h> int main() { int num, count, sum = 0; printf("Enter a positive integer: "); scanf("%d", &num); // for loop term...
Test.java 文件代码: publicclassTest{publicstaticvoidmain(String[]args){for(intx=10;x<20;x=x+1){System.out.print("value of 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...