Guava的Bytes类的Bytes.(byte []数组java数组indexof Java Bytes.indexOf(byte[] array，字节目标)方法接受两个参数array和。如果目标存在于数组中，则该方法返回其首次出现的位置。如果目标在数组中不存在，则该方法返回-1。
用法:
int (byte[] array, byte )
参数：该方法接受两个参数：
返回值：该方法返回一个整数值java数组indexofjava数组indexof，如下所示：
异常：该方法不会引发任何异常。
以下示例说明了上述方法的实现：
范例1：
// Java code to show implementation of
// Guava's Bytes.indexOf(byte[] array,
// byte target) method
import com.google.common.primitives.Bytes;
import java.util.Arrays;
class GFG {
// Driver's code
<p>![数组indexof_js 数组 indexof ie8_java数组indexof][1]
public static void main(String[] args)
{
// Creating an byte array
byte[] arr = { 1, 2, 3, 4, 3, 5 };
byte target = 3;
System.out.println("Array:"
+ Arrays.toString(arr));
System.out.println("Target:" + target);
// Using Bytes.indexOf(byte[] array, byte target)
// method to get the position of the first
// occurrence of the specified target within array,
  ![数组indexof_java数组indexof_js 数组 indexof ie8][2]
// or -1 if there is no such occurrence.
int index = Bytes.indexOf(arr, target);
if (index != -1) {
System.out.println("Target is present at index "
+ index);
}
else {
System.out.println("Target is not present "
+ "in the array");
}
} </p>
输出：
<pre>
Array:[1, 2, 3, 4, 3, 5]
<p>
Target:3
Target is present at index 2
</pre></p>
范例2：
// Java code to show implementation of
// Guava's Bytes.indexOf(byte[] array,
// byte target) method
import com.google.common.primitives.Bytes;
import java.util.Arrays;
class GFG {
// Driver's code
public static void main(String[] args)
{
<p>![java数组indexof_数组indexof_js 数组 indexof ie8][4]
// Creating an byte array
byte[] arr = { 3, 5, 7, 11, 13 };
byte target = 23;
System.out.println("Array:"
+ Arrays.toString(arr));
System.out.println("Target:" + target);
// Using Bytes.indexOf(byte[] array, byte target)
// method to get the start position of the first
// occurrence of the specified target within array,
// or -1 if there is no such occurrence.
int index = Bytes.indexOf(arr, target);
  ![java数组indexof_js 数组 indexof ie8_数组indexof][5]
if (index != -1) {
System.out.println("Target is present at index "
+ index);
}
else {
System.out.println("Target is not present"
+ " in the array");
}
} </p>
输出：
<pre>
Array:[3, 5, 7, 11, 13]
Target:23
Target is not present in the array
</pre>
参考： #(byte[], %)