在本教程中,我们将学习以下两种方法将十进制数转换为等效的八进制数。
1)使用预定义的方法Integer.toOctalString(int num)
2)编写我们自己的转换逻辑
import java.util.Scanner;
class DecimalToOctalExample
{
public static void main(String args[])
{
Scanner input = new Scanner( System.in );
System.out.print("Enter a decimal number : ");
int num =input.nextInt();
/* Method 1:
* Using predefined method toOctalString(int)
* Pass the decimal number to this method and
* it would return the equivalent octal number
*/
String octalString = Integer.toOctalString(num);
System.out.println("Method 1: Decimal to octal: " + octalString);
/* Method 2:
* Writing your own logic: Here we will write
* our own logic for decimal to octal conversion
*/
// For storing remainder
int rem;
// For storing result
String str="";
// Digits in Octal number system
char dig[]={'0','1','2','3','4','5','6','7'};
while(num>0)
{
rem=num%8;
str=dig[rem]+str;
num=num/8;
}
System.out.println("Method 2: Decimal to octal: "+str);
}
}
输出:
Enter a decimal number : 123
Method 1: Decimal to octal: 173
Method 2: Decimal to octal: 173