Java 中的十进制格式等于()方法

原文:https://www . geesforgeks . org/decimal format-equals-method-in-Java/

equals()方法是 java.text.DecimalFormat 类的内置方法，它接受一个作为对象的参数，如果这个参数对象与对象相同，则返回 true，否则返回 false。

语法 :

public boolean equals(Object arg)

参数:该函数接受单个强制参数参数，该参数指定要比较的对象。

返回值:该函数返回一个布尔值。如果两个对象相同，则返回 true，否则返回 false。

下面是上述功能的实现:

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

程序二 :

// 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:https://docs . Oracle . com/javase/7/docs/API/Java/text/decimal format . html # clone()

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