数组的两种写法：定义与传参

public class ArrayTest{
	public void print(String... mes){
		for(String str:mes){
			System.out.println(str);
		}
	}

	public void print1(String[] mes){
		for(String str:mes){
			System.out.println(str);
		}
	}
	
	public static void main(String[] args){
		String[] arr={"aa","bb","cc"};
		ArrayTest at=new ArrayTest();
		at.print(arr);
		
		String[] arr1=new String[3];
		arr1[0]="dd";
		arr1[1]="ee";
		arr1[2]="ff";
		at.print1(arr1);
	}
}

 运行结果：

import java.util.Arrays;
public class javaArrays{
	public static void main(String[] args){
		int[] a1=new int[]{1,2,3,4,5};
		int[] a2=new int[]{1,2,3,4,5};
		System.out.println(Arrays.equals(a1,a2));

		int[] b1=Arrays.copyOf(a1,8);
		System.out.println(Arrays.toString(b1));

		Arrays.fill(b1,2,6,9);
		System.out.println(Arrays.toString(b1));

		Arrays.sort(b1);
		System.out.println(Arrays.toString(b1));
	}
}