Java Byte decode() method

The decode() method of Java Byte class decodes a String into a Byte. It can accept decimal, hexadecimal and octal numbers.

Syntax:

Parameters:

The parameter 'nm' represents the String to decode.

Throws:

The decode() method throws :

NumberFormatException- if the String does not contains a parsable byte.

Return Value

This method returns a Byte object holding the byte value of string 'nm'.

Example 1

public class JavaByteDecodeExample1 {
    public static void main(String[] args) {
        String str="12";
        //decodes a String into a Byte
        Byte b1=Byte.decode(str);
        System.out.println(b1);
    }
}

Test it Now

Output:

Example 2

public class JavaByteDecodeExample2 {
    public static void main(String[] args) {
        //for null value it will give an exception
        String str="null";
        Byte b1=Byte.decode(str);
        System.out.println(b1);
    }
}

Test it Now

Output:

Exception in thread "main" java.lang.NumberFormatException: For input string: "null"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Integer.parseInt(Integer.java:580)
	at java.lang.Integer.valueOf(Integer.java:740)
	at java.lang.Integer.decode(Integer.java:1197)
	at java.lang.Byte.decode(Byte.java:277)
	at com.JavaTpoint.JavaByteDecodeExample2.main(JavaByteDecodeExample2.java:6)

Example 3

public class JavaByteDecodeExample3 {
    public static void main(String[] args) {
        //for Min.VALUE value it will give an NumberFormatException
        String str="Byte.MIN_VALUE";
        Byte b1=Byte.decode(str);
        System.out.println(b1);
        Byte b2=Byte.MIN_VALUE;
        System.out.println(b2);
    }
}

Test it Now

Output:

Exception in thread "main" java.lang.NumberFormatException: For input string: "Byte.MIN_VALUE"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Integer.parseInt(Integer.java:580)
	at java.lang.Integer.valueOf(Integer.java:740)
	at java.lang.Integer.decode(Integer.java:1197)
	at java.lang.Byte.decode(Byte.java:277)
	at com.JavaTpoint.JavaByteDecodeExample3.main(JavaByteDecodeExample3.java:7)

Next TopicJava Byte

← prev next →