Java Integer toUnsignedLong()用法及代碼示例

toUnsignedLong() 是一個 Java Integer 類方法，它通過無符號轉換將參數轉換為 long。在對 long 的無符號轉換中，long 的 high-order 32 位為零，低 32 位等於整數參數的位。

用法:

以下是 toUnsignedLong() 方法的聲明：

public static long toUnsignedLong(int i)

參數：

數據類型	參數	描述	必需/可選
int	i	它是一個用於轉換為 unsigned long 的值。	Required

返回值：

toUnsignedLong() 方法返回通過無符號轉換轉換為 long 的參數。

異常：

兼容版本：

Java 1.8 及以上

例子1

public class IntegerToUnsignedLongExample1 {
	public static void main(String[] args) {
	    int x1 = -5;
	    int x2 = 5;
	    int y1 = -6;
	    int y2 = 6;
	    //Performs unsigned operation treating x and y holding unsigned values
	    long ux1 = Integer.toUnsignedLong(x1);
	    long ux2 = Integer.toUnsignedLong(x2);
	    long uy1 = Integer.toUnsignedLong(y1);	 
	    long uy2 = Integer.toUnsignedLong(y2);	    
	    System.out.println("Unsigned x1  = " + ux1);
	    System.out.println("Unsigned x2  = " + ux2);
	    System.out.println("Unsigned y1  = " + uy1);	    
	    System.out.println("Unsigned y2  = " + uy2);
          }
}

輸出：

Unsigned x1  = 4294967291
Unsigned x2  = 5
Unsigned y1  = 4294967290
Unsigned y2  = 6

例子2

import java.util.Scanner;
public class IntegerToUnsignedLongExample2 {
	public static void main(String[] args) {
		//Enter user input
		System.out.print("Enter a value to perform unsigned operation:");
		Scanner s = new Scanner(System.in);
		Integer value = s.nextInt();								
		//Get the toUnsignedLong() method result
		Long result = Integer.toUnsignedLong(value);				
		// print the result
		System.out.println("Output:"+result);
		s.close();
            }
}

輸出：

Enter a value to perform unsigned operation:32435
Output:32435

例子3

import java.util.Scanner;
public class IntegerToUnsignedLongExample3 {
	public static void main(String[] args) {
		//Enter user input
		System.out.print("Input value to perform unsigned operation:");
		Scanner s = new Scanner(System.in);
		Integer value = s.nextInt();								
		//Print the result
		System.out.println("Output:"+Integer.toUnsignedLong(value));
		s.close();
            }
}

輸出：

Input value to perform unsigned operation:-GSDJD
Exception in thread "main" java.util.InputMismatchException
	at java.base/java.util.Scanner.throwFor(Scanner.java:939)
	at java.base/java.util.Scanner.next(Scanner.java:1594)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
	at myPackage.IntegerToUnsignedLongExample3.main(IntegerToUnsignedLongExample3.java:8)

相關用法

注：本文由純淨天空篩選整理自 Java Integer toUnsignedLong() Method。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。