java.lang.Integer.reverseBytes(int a)是内置方法,该方法返回通过反转指定int值的二进制补码表示形式的字节顺序而获得的值。
用法:
public static int reverseBytes(int a)
参数:该方法采用整数类型的一个参数a,其字节将被反转。
返回值:该方法将返回通过反转指定的int值中的字节获得的值。
例子:
Input: 75 Output: 1258291200 Explanation: Consider an integer a = 75 Binary Representation = 1001011 Number of one bit = 4 After reversing the bytes we get = 1258291200 Input: -43 Output: -704643073
以下程序说明了java.lang.Integer.reverseBytes()方法:
示例1:为正数。
// Java program to illustrate the
// Java.lang.Integer.reverseBytes() method
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
int a = 61;
System.out.println(" Integral Number = " + a);
// It will return the value obtained by reversing the bytes in the
// specified int value
System.out.println("After reversing the bytes we get = " +
Integer.reverseBytes(a));
}
}
输出:
Integral Number = 61 After reversing the bytes we get = 1023410176
示例2:为负数。
// Java program to illustrate the
// Java.lang.Integer.reverseBytes() method
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
int a = -43;
System.out.println(" Integral Number = " + a);
// It will return the value obtained by reversing the bytes in the
// specified int value
System.out.println("After reversing the bytes we get = " +
Integer.reverseBytes(a));
}
}
输出:
Integral Number = -43 After reversing the bytes we get = -704643073
示例3:用于十进制值和字符串。
注意:当将十进制值和字符串作为参数传递时,它将返回错误消息。
// Java program to illustrate the
// Java.lang.Integer.reverseBytes() method
import java.lang.*;
public class Geeks {
public static void main(String[] args)
{
int a = 37.81;
System.out.println(" Integral Number = " + a);
// It will return the value obtained by reversing the bytes in the
// specified int value
System.out.println("After reversing the bytes we get = " +
Integer.reverseBytes(a));
a = "81"; // compile time error will be generated
System.out.println(" Integral Number = " + a);
System.out.println("After reversing the bytes we get = " +
Integer.reverseBytes(a));
}
}
输出:
prog.java:9: error: incompatible types: possible lossy conversion from double to int int a = 37.81; ^ prog.java:18: error: incompatible types: String cannot be converted to int a = "81"; ^ 2 errors
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注:本文由纯净天空筛选整理自ankita_chowrasia大神的英文原创作品 Integer reverseBytes() Method in Java。非经特殊声明,原始代码版权归原作者所有,本译文未经允许或授权,请勿转载或复制。