java define
長類解碼()方法 (Long class decode() method)
decode() method is available in java.lang package.
在java.lang包中提供了define ()方法 。
decode() method is used to decode the given String value into a Long value.
encode()方法用于將給定的String值解碼為Long值。
decode() method is a static method, it is accessible with the class name too and if we try to access the method with the class object then also we will not get an error.
encode()方法是一個靜態方法,也可以使用類名進行訪問,如果我們嘗試使用類對象訪問該方法,那么也不會收到錯誤。
decode() method may throw a NumberFormatException at the time of decoding a String to a Long.
在將String解碼為Long時, decode()方法可能會引發NumberFormatException。
NumberFormatException: In this exception, if the given string parameter does not have a parsable integer.
NumberFormatException:在此異常中,如果給定的字符串參數沒有可解析的整數。
Syntax:
句法:
public static Long decode(String str);
Parameter(s):
參數:
String str – represents the String to decode.
字符串str –表示要解碼的字符串。
Return value:
返回值:
The return type of this method is long, it returns the Long holding a long value represented by the argument of String type.
該方法的返回類型為long ,它返回Long,其中Long持有一個用String類型的參數表示的long值。
Example:
例:
// Java program to demonstrate the example
// of decode(String str) method of Long class
public class DecodeOfLongClass {
public static void main(String[] args) {
// Variables initialization
long l = 100;
String str = "20";
// Long object initialized with "long" value
Long ob1 = new Long(l);
// Display ob1 result
System.out.println("ob1: " + ob1);
// It returns an Long object holding the long value
// denoted by the given String argument by calling
// ob1.decode(str)
Long result = ob1.decode(str);
// Display result
System.out.println("ob1.decode(str) :" + result);
}
}
Output
輸出量
ob1: 100
ob1.decode(str) :20
翻譯自: https://www.includehelp.com/java/long-class-decode-method-with-example.aspx
java define