Java 中的属性等于(值)方法，示例
原文:https://www . geesforgeks . org/properties-equals value-method-in-Java-with-examples/
属性类 的等于(值)方法用于检查两个属性之间的相等性。它验证作为参数传递的一个属性对象的元素是否等于该属性的元素。
语法:
public boolean equals(Object value)
参数:该方法接受该属性类型的参数值，并引用要用该映射检查其相等性的映射。
返回:该方法返回一个布尔值，说明两个对象属性是否相等。
下面的程序说明了 equals(值)方法:
程序 1:
// Java program to demonstrate
// equals(value) method.
import java.util.*;
public class GFG {
// Main method
public static void main(String[] args)
{
// Create a properties and add some values
Properties properties = new Properties();
properties.put("Pen", 10);
properties.put("Book", 500);
properties.put("Clothes", 400);
properties.put("Mobile", 5000);
// Print Properties details
System.out.println("Properties 1: "
+ properties.toString());
// Create another properties and add some values
Properties properties1 = new Properties();
properties1.put("Pen", 10);
properties1.put("Book", 500);
properties1.put("Clothes", 400);
properties1.put("Mobile", 5000);
// Print Properties details
System.out.println("Properties 2: "
+ properties1.toString());
// Checking the equality
System.out.println("Are both properties equal: "
+ properties.equals(properties1));
}
}
输出:
Properties 1: {Book=500, Mobile=5000, Pen=10, Clothes=400}
Properties 2: {Book=500, Mobile=5000, Pen=10, Clothes=400}
Are both properties equal: true
程序二:
// Java program to demonstrate
// equals(value) method.
import java.util.*;
public class GFG {
// Main method
public static void main(String[] args)
{
// Create a properties and add some values
Properties properties = new Properties();
properties.put(1, "100RS");
properties.put(2, "500RS");
properties.put(3, "1000RS");
// Print Properties details
System.out.println("Current Properties: "
+ properties.toString());
// Create another properties and add some values
Properties properties1 = new Properties();
properties1.put("Pen", 10);
properties1.put("Book", 500);
properties1.put("Clothes", 400);
properties1.put("Mobile", 5000);
// Print Properties details
System.out.println("Properties 2: "
+ properties1.toString());
// Checking the equality
System.out.println("Are both properties equal: "
+ properties.equals(properties1));
}
}
输出:
Current Properties: {3=1000RS, 2=500RS, 1=100RS}
Properties 2: {Book=500, Mobile=5000, Pen=10, Clothes=400}
Are both properties equal: false
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