Java instances - for use with foreach loop

Java Examples

for the statement is relatively simple for cyclic data.

The number of cycles performed for a determined before executing it. Syntax is as follows:

for(初始化; 布尔表达式; 更新) {
    //代码语句
}

foreach statement is one of the new features java5 in through the array, the collection aspect, foreach provides great convenience for developers.

foreach syntax is as follows:

for(元素类型t 元素变量x : 遍历对象obj){ 
     引用了x的java语句; 
} 

The following example demonstrates the use of for and foreach loop:

/*
 author by w3cschool.cc
 Main.java
 */

public class Main {
   public static void main(String[] args) {
      int[] intary = { 1,2,3,4};
      forDisplay(intary);
      foreachDisplay(intary);
   }
   public static void forDisplay(int[] a){  
      System.out.println("使用 for 循环数组");
      for (int i = 0; i < a.length; i++) {
         System.out.print(a[i] + " ");
      }
      System.out.println();
   }
   public static void foreachDisplay(int[] data){
      System.out.println("使用 foreach 循环数组");
      for (int a  : data) {
         System.out.print(a+ " ");
      }
   }
}

The above code is run output is:

使用 for 循环数组
1 2 3 4 
使用 foreach 循环数组
1 2 3 4

Java Examples