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Java Currency getSymbol()用法及代碼示例

有兩種類型的 getIsntance 方法。

Java 貨幣 getSymbol() 方法

getSymbol() 是 Java Currency 類的方法，用於獲取默認 DISPLAY 語言環境的給定貨幣的符號。例如，美元的符號是 "$"。

用法

以下是 getSymbol() 方法的聲明：

public String getSymbol()

參數

數據類型 參數 描述
NA NA 此方法不接受任何參數。

返回

getSymbol() 方法用於獲取調用默認語言環境的貨幣符號。

異常

NA

兼容版本

Java 1.4 及以上

例子1

import java.util.Currency;
public class CurrencyGetSymbolExample1 {
   public static void main(String args[]) {
     // Create a currency for USD
      Currency cur = Currency.getInstance("USD");
      // Get and print the symbol of the currency
      String symbol = cur.getSymbol();
      System.out.println("Currency symbol is:" + symbol); 
   }
}

輸出：

Currency symbol is:$

例子2

import java.util.Locale;
import java.util.Currency;
public class CurrencyGetSymbolExample2 {
    public static void main(String[] args) {
        Currency us = Currency.getInstance(Locale.US);
        System.out.println("Currency symbol of US:" + us.getSymbol());
        Currency germany = Currency.getInstance(Locale.GERMANY);
        System.out.println("Currency symbol of Germany:" + germany.getSymbol());
        Currency uk = Currency.getInstance(Locale.UK);
        System.out.println("Currency symbol of UK:" + uk.getSymbol());
    }
}

輸出：

Currency Symbol of US:$
Currency symbol of Germany:EUR
Currency symbol of UK:GBP

例子3

import java.util.*;
public class CurrencyGetSymbolExample3 {
    public static void main(String[] args) {
    	Currency cur = Currency.getInstance("EUR");
    		//In default locale
      	System.out.println("Currency symbol of EUR is:" + cur.getSymbol()); 
      	Locale.setDefault(Locale.UK);
		//Change the default locale
	System.out.println("Currency symbol of EUR is:" + cur.getSymbol());
 }
}

輸出：

Currency symbol of EUR is:EUR
Currency symbol of EUR is:?

示例 4

import java.util.Currency;
import java.util.Scanner; 
public class CurrencyGetSymbolExample4 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter the currency:");  
        String name=sc.next();
        Currency currency = Currency.getInstance(name);
        System.out.println("Currency name is:"+ currency.getDisplayName());
        System.out.println("Currency Symbol is:"+ currency.getSymbol());        
    }
}

輸出：

Enter the Currency:EUR
Currency name is:Euro
Currency Symbol is:EUR

Enter the Currency:USD
Currency name is:US Dollar
Currency Symbol is:$

Java Currency getSymbol(Locale locale) 方法

getSymbol(Locale locale) 是Java Currency 類的方法，用於獲取調用指定locale 的貨幣符號。例如，對於美元，如果指定本地為US，則符號為"$"，否則可能為"US$"。

用法

以下是 getSymbol(Locale locale) 方法的聲明：

public String getSymbol(Locale locale)

參數

數據類型 參數 描述
NA locale locale 是需要給定貨幣的顯示名稱。

返回

getSymbol(Locale locale) 方法返回指定語言環境的調用貨幣符號。

異常

NullPointerException ？如果語言環境為 Null。

兼容版本

Java 1.4 及以上

例子1

import java.util.*;
public class CurrencyGetSymbolLocaleExample1 {
   public static void main(String args[]) {
      // create a currency for uk locale
      Locale locale = Locale.UK;
      Currency curr = Currency.getInstance(locale);
      // get and print the symbol of the currency
      System.out.println("Currency symbol is:" + curr.getSymbol(locale));
   }
}

輸出：

Currency symbol is:ÂŁ

例子2

import java.util.*;
 public class CurrencyGetSymbolLocaleExample2 {
    public static void main(String[] args) {
        Currency us = Currency.getInstance(Locale.US);
        System.out.println("Currency Symbol:- " + us.getSymbol());
        System.out.println("Currency Symbol With Locale:- " + us.getSymbol(Locale.US));
        Currency uk = Currency.getInstance(Locale.UK);
        System.out.println("\nCurrency Symbol:- " + uk.getSymbol());
        System.out.println("Currency Symbol With Locale:- " + uk.getSymbol(Locale.UK));
 
        Currency germany = Currency.getInstance(Locale.GERMANY);
        System.out.println("\nCurrency Symbol:- " + germany.getSymbol());
        System.out.println("Currency Symbol With Locale:- " + germany.getSymbol(Locale.GERMANY));
    }
}

輸出：

Currency Symbol:$
Currency Symbol with Locale:$

Currency Symbol:GBP
Currency Symbol with Locale:ÂŁ

Currency Symbol:EUR
Currency Symbol with Locale:?

例子3

import java.util.Currency;
import java.util.Locale;
public class CurrencyGetSymbolLocaleExample3{
  public void displayCurrencySymbols() {
   	Currency currency = Currency.getInstance(Locale.US); 
   	System.out.println("United States:" + currency.getSymbol(Locale.US));
  } 
  public static void main(String[] args){
    	new CurrencyGetSymbolLocaleExample3().displayCurrencySymbols();
  }
}

輸出：

United States:$

示例 4

import java.util.Currency;
import java.util.Locale;

public class CurrencyGetSymbolLocaleExample4 {
   public static void main(String args[]) {
        Currency currency = Currency.getInstance("USD");
        System.out.println("USD:"+currency.getSymbol());
        System.out.println("USD:"+currency.getSymbol(Locale.CANADA));
        System.out.println("USD:"+currency.getSymbol(new Locale("en","AU")));
   }
}

輸出：

USD:$
USD:US$
USD:USD



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