Java byte[] 数组的长度
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Length of byte[] array
提问by
String str = "123456789";
byte[] bytes = str.getBytes();
I want to make the following loop
我想做以下循环
for (int j = 0; j < bytes.length(); j++) {
b = bytes[j];
}
bwill store each byte of my array, but I can't seem to get the length of the array correctly.
b将存储数组的每个字节，但我似乎无法正确获取数组的长度。
Error:cannot find symbol
Problem solved: bytes.length instead of bytes.length()
采纳答案by Brian
Use bytes.lengthwithout the ()
使用bytes.length无()
回答by Sabuj Hassan
Its not bytes.length(), its bytes.length
它不是bytes.length()，它的bytes.length
回答by Maroun
See the JLS - 10.7. Array Members:
请参阅JLS - 10.7。数组成员：
The members of an array type are all of the following:
The
public final field length, which contains the number of components of the array. length may be positive or zero.
数组类型的成员如下：
的
public final field length，其中包含所述阵列的部件的数量。长度可以是正数或零。
lengthis a property, not a method. You should write:
length是一个属性，而不是一个方法。你应该写：
bytes.length
回答by barak manos
In order to get the length of an array, use length. For example:
要获取数组的长度，请使用length. 例如：
int[] arr = {1,2,3};
int length = arr.length;
In order to get the length of a string, use length(). For example:
要获取字符串的长度，请使用length(). 例如：
String str = "123";
int length = str.length();
回答by Sudz
getBytes() Encodes the String into a sequence of bytes using the platform's default charset, storing the result into a new byte array.
getBytes() 使用平台的默认字符集将 String 编码为字节序列，并将结果存储到新的字节数组中。
Try to print the bytes you will see the encoded values which may differ in length compare to original string.
尝试打印字节，您将看到与原始字符串相比长度可能不同的编码值。
