Java: Three ways to traverse an array

1. A for loop to traverse an
array is a very common method to traverse an array with a for loop. The length of the array can be obtained through the length property of the array in the Java language.

package demo;

public class test {
    
    
	public static void main(String[] args) {
    
    
		int [] array = {
    
    1,2,3,4,5};
		for(int i = 0;i < array.length;i++) {
    
    
			System.out.print(array[i] + " ");
		}
	}
}

2. Traversal based on loop statement
JDK1.5 expands and enhances the function of for statement to facilitate better traversal of arrays;
syntax format:

for(声明循环变量：数组的名字){
    
    //注意：这里的“声明循环变量”一定是声明变量，不可以使用已经被声明的变量
	....
}

example:

package demo;

public class test {
    
    
	public static void main(String[] args) {
    
    
		int [] array = {
    
    1,2,3,4,5};
		for(int in:array) {
    
    
			System.out.print(in + " ");
		}
	}
}

3. Use the toString() method to traverse the array.
This method is a simple way to output the value of an array element provided by JDK1.5. Use the Arrays class to call the public static String toString(int[] a) method to get the string representation of the specified one-dimensional array a in the following format.
[a[0],a[1]…a[a.lenth-1]]

package demo;

import java.util.Arrays;

public class test {
    
    
	public static void main(String[] args) {
    
    
		int [] array = {
    
    1,2,3,4,5};
		System.out.print(Arrays.toString(array));
	}
}