Java Convert Decimal to Octal

17 Mar 2025 | 阅读 2 分钟

我们可以使用 Integer.toOctalString() 方法或自定义逻辑在 Java 中将十进制转换为八进制。

Java 十进制转八进制：Integer.toOctalString()

toOctalString() 方法将十进制数转换为八进制字符串。toOctalString() 方法的签名如下

让我们看一个在 Java 中将十进制转换为八进制的简单示例。

//Java Program to demonstrate the use of Integer.toOctalString() method
public class DecimalToOctalExample1{
public static void main(String args[]){
//Using the predefined Integer.toOctalString() method
//to convert decimal value into octal
System.out.println(Integer.toOctalString(8));
System.out.println(Integer.toOctalString(19));
System.out.println(Integer.toOctalString(81));
}}

输出

10
23
121

Java 十进制转八进制：自定义逻辑

我们可以使用自定义逻辑在 Java 中将十进制转换为八进制。

//Java Program to demonstrate the decimal to octal conversion
//using custom code
public class DecimalToOctalExample2{  
//creating method for conversion so that we can use it many times
public static String toOctal(int decimal){  
    int rem; //declaring variable to store remainder
    String octal=""; //declareing variable to store octal
    //declaring array of octal numbers
    char octalchars[]={'0','1','2','3','4','5','6','7'};
    //writing logic of decimal to octal conversion 
    while(decimal>0)
    {
       rem=decimal%8; 
       octal=octalchars[rem]+octal; 
       decimal=decimal/8;
    }
    return octal;
}  
public static void main(String args[]){    
//Calling custom method to get the octal number of given decimal value
System.out.println("Decimal to octal of 8 is: "+toOctal(8));
System.out.println("Decimal to octal of 19 is: "+toOctal(19));
System.out.println("Decimal to octal of 81 is: "+toOctal(81));
}}    

输出

Decimal to octal of 8 is: 10
Decimal to octal of 19 is: 23
Decimal to octal of 81 is: 121

引用

下一主题Java 中的集合

Java Convert Decimal to Octal

Java 十进制转八进制：Integer.toOctalString()

Java 十进制转八进制：自定义逻辑

引用

联系信息

关注我们

教程

面试题

在线编译器

Python

Java

.Net Framework

AI, ML and Data Science

Cloud Technology

B.Tech and MCA

Web Technology

PHP

Software Testing

Technical Interview

Java Interview

Python

Web Interview

Database Interview

B.Tech / MCA

Important Interview

Software Testing Interview

Company Interviews

Online Compilers

Multiple Choice Questions

Java Conversion

Java Misc

Java Convert Decimal to Octal

Java 十进制转八进制：Integer.toOctalString()

Java 十进制转八进制：自定义逻辑

引用

相关帖子

Java String to long

Java long to String

Java double to int

Java String to float

Timestamp to Date

Java String to int

Date to Timestamp

Decimal to Hex

Java Date to String

Java String to boolean

订阅 Tpoint Tech

联系信息

关注我们

教程

面试题

在线编译器