How to convert integer to binary string using toBinaryString() method of Integer class

How to use the toBinaryString() method of the Integer class to convert an integer into a binary string

In computer science, binary representation is an important representation, especially when developing underlying programming languages ​​and performing During bit operations. In Java, a simple and convenient way to convert an integer to a binary string is to use the toBinaryString() method of the Integer class.

The Integer.toBinaryString() method accepts an integer as a parameter and returns the binary representation of the integer. Here is a sample code that demonstrates how to use this method:

public class BinaryConverter {
    public static void main(String[] args) {
        int number = 10; // 要转换的整数
        
        String binaryString = Integer.toBinaryString(number);
        
        System.out.println("数字 " + number + " 的二进制表示是 " + binaryString);
    }
}

In the above code, we first declare an integer variable number and initialize it to 10. Then, use the Integer.toBinaryString() method to convert the number to a binary string and save the result in the binaryString variable.

Finally, we use the System.out.println() method to output the conversion results. Running the above code, you will get the following results:

数字 10 的二进制表示是 1010

As shown above, we successfully converted the integer 10 into the binary string "1010".

In addition to converting integers to binary strings, the Integer class also provides other methods related to base conversion. For example, you can use the Integer.parseInt() method to convert a binary string back to an integer. The following is a sample code:

public class IntegerConverter {
    public static void main(String[] args) {
        String binaryString = "1010"; // 二进制字符串
        
        int number = Integer.parseInt(binaryString, 2);
        
        System.out.println("二进制字符串 " + binaryString + " 转换为整数是 " + number);
    }
}

In this example, we declare a string variable binaryString and initialize it to "1010", which represents a binary number. Then, use the Integer.parseInt() method to parse the binaryString into an integer and save the result in the number variable.

Finally, we use the System.out.println() method to output the conversion results. Running the above code, you will get the following results:

二进制字符串 1010 转换为整数是 10

As shown above, we successfully converted the binary string "1010" into the integer 10.

In general, using the toBinaryString() method of the Integer class can easily convert integers into binary strings. This is very helpful for doing bit operations, writing low-level programming code, and understanding the underlying workings of computers. In the actual programming process, you can combine the related methods provided by other Integer classes to implement more complex hexadecimal conversion operations.

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