Tiger学习 之 Arrarys

toString方法：直接输出数组的各个元素的值

引用

String[] str1 = {"a","b","c"} ;
System.out.println("str1 values are  :  "+Arrays.toString(str1));

输出：str1 values are  :  [a, b, c]       

deepToString方法：直接输出多维数组的各个元素的值

引用

String[][] str2 = {{"a","aa"},{"b","bb"},{"c","cc"}};
System.out.println("str2 values are:  "+Arrays.deepToString(str2));

输出：str2 values are:  [[a, aa], [b, bb], [c, cc]]

equals方法：比较两个数组的值是否相等

引用

String[] str1 = {"a","b","c"} ;
String[] str2 = {"a","b","c"} ;
if  (Arrays.equals(str1, str2))
System.out.println("str1 and str2 are equal.");
else
System.out.println("str1 and str2 are not equal.");

输出：str1 and str2 are equal.

deepEquals方法：比较两个多维数组的值是否相等

引用

String[][] str1 = {{"a","aa"},{"b","bb"},{"c","cc"}};
String[][] str2 = str1.clone();

if  (Arrays.deepEquals(str1, str2))
System.out.println("str1 and str2 are equal.");
else
System.out.println("str1 and str2 are not equal.");

输出：str1 and str2 are equal.

fill方法：一维数组的填值

引用

String[] str1 = new String[2];
Arrays.fill(str1, "{abc}");
System.out.println("str1 values are: "+Arrays.toString(str1));

输出：str1 values are: [{abc}, {abc}]

hashCode，deepHashCode 方法：取得数组的hashCode和deepHashCode值。
sort 方法：对数组元素进行排序