Java Collator equals(Object)用法及代碼示例

java.text.Collator類的equals()方法用於檢查兩個Collator對象是否相同。

用法:

public boolean equals(Object that)

參數：此方法接受兩個Collator對象，它們之間將進行比較。

返回值：如果兩個Collator對象彼此相等，則它將返回true，否則返回false。

下麵是說明equals()方法的示例：

範例1：

// Java program to demonstrate 
// equals() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
  
            // Creating and initalizing new simple rule 
            String simple = "< a< b< c< d"; 
  
            // Creating and initializing 
            // new RuleBasedCollator Object 
            RuleBasedCollator col_1 
                = new RuleBasedCollator(simple); 
  
            // Creating and initializing 
            // Collator Object 
            Collator col_2 
                = Collator.getInstance(Locale.US); 
  
            // compare both object 
            // using equals() mehtod 
            boolean i = col_1.equals(col_2); 
  
            // display result 
            if (i) 
                System.out.println(col_1 
                                   + " is equal to "
                                   + col_2); 
            else
                System.out.println(col_1 
                                   + " is not equal to "
                                   + col_2); 
        } 
  
        catch (ClassCastException e) { 
  
            System.out.println("Exception thrown:" + e); 
        } 
        catch (ParseException e) { 
  
            System.out.println("Exception thrown:" + e); 
        } 
    } 
}

輸出：

java.text.RuleBasedCollator@5eb2e1c2 is not equal to java.text.RuleBasedCollator@289747d6

範例2：

// Java program to demonstrate 
// equals() method 
  
import java.text.*; 
import java.util.*; 
import java.io.*; 
  
public class GFG { 
    public static void main(String[] argv) 
    { 
        try { 
  
            // Creating and initializing 
            // Collator Object 
            Collator col_1 
                = Collator.getInstance(Locale.UK); 
  
            // Creating and initializing 
            // Collator Object 
            Collator col_2 
                = Collator.getInstance(Locale.US); 
  
            // compare both object 
            // using equals() mehtod 
            boolean i = col_1.equals(col_2); 
  
            // display result 
            if (i) 
                System.out.println(col_1 
                                   + " is equal to "
                                   + col_2); 
            else
                System.out.println(col_1 
                                   + " is not equal to "
                                   + col_2); 
        } 
  
        catch (ClassCastException e) { 
  
            System.out.println("Exception thrown:" + e); 
        } 
    } 
}

輸出：

java.text.RuleBasedCollator@289747d6 is equal to java.text.RuleBasedCollator@289747d6

參考： https://docs.oracle.com/javase/9/docs/api/java/text/Collator.html#equals-java.lang.Object-

相關用法

注：本文由純淨天空篩選整理自RohitPrasad3大神的英文原創作品 Collator equals(Object) method in Java with Example。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。