Java DecimalFormat equals()方法

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Java DecimalFormat equals()方法

equals()方法是 java.text.DecimalFormat 类的一个内置方法,它接受一个对象参数,如果该参数对象与该对象相同,则返回真,否则返回假。

语法:

public boolean equals(Object arg)

参数 :该函数接受一个强制参数arg,它指定了要比较的对象。

返回值 :该函数返回一个布尔值。如果两个对象相同,则返回真,否则返回假。

下面是上述函数的实现。

程序1 :

// Java program to illustrate the// equals() method  import java.text.DecimalFormat;import java.util.Currency;import java.util.Locale;  public class Main {    public static void main(String[] args)    {          // Get the Currency Instance        DecimalFormat dF1 = new DecimalFormat();        dF1.getCurrencyInstance();          // Get the Currency Instance        DecimalFormat dF2 = new DecimalFormat();        dF2.getCurrencyInstance();          // Check if equal or not        if (dF1.equals(dF2))            System.out.println("Yes both are equal");        else            System.out.println("Yes both are not equal");    }}

输出:

Yes both are equal

程序2 :

// Java program to illustrate the// equals() method  import java.text.DecimalFormat;import java.util.Currency;import java.util.Locale;  public class Main {    public static void main(String[] args)    {          // Get the Currency Instance        DecimalFormat dF1 = new DecimalFormat();        dF1.getCurrencyInstance();          // Get Instance        DecimalFormat dF2 = new DecimalFormat();        dF2.setCurrency(Currency.getInstance(Locale.GERMANY));          // Check if equal or not        if (dF1.equals(dF2))            System.out.println("Yes both are equal");        else            System.out.println("Yes both are not equal");    }}

输出:

Yes both are not equal

参考资料 : https://docs.oracle.com/javase/7/docs/api/java/text/DecimalFormat.html#clone()

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