Java Collator equals(String, String)用法及代碼示例

java.text.Collator類的equals()方法用於檢查兩個字符串是否相同。

用法:

public boolean equals(String source,
                      String target)

參數：此方法需要兩個字符串之間進行比較。

返回值：如果兩個字符串彼此相等，則返回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 initializing 
            // Collator Object 
            Collator col = Collator.getInstance(); 
  
            // Creating an initializing 
            // object for comparison 
            String obj1 = "a"; 
  
            // Creating an initializing 
            // Object for comparison 
            String obj2 = "A"; 
  
            // compare both object 
            // using equals() mehtod 
            boolean i = col.equals(obj1, obj2); 
  
            // display result 
            if (i) 
                System.out.println(obj1 
                                   + " is equal to "
                                   + obj2); 
            else
                System.out.println(obj1 
                                   + " is not equal to "
                                   + obj2); 
        } 
  
        catch (ClassCastException e) { 
  
            System.out.println("Exception thrown:" + e); 
        } 
    } 
}

輸出：

a is not equal to A

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 = Collator.getInstance(); 
  
            // Creating an initializing 
            // object for comparison 
            String obj1 = "a"; 
  
            // Creating an initializing 
            // Object for comparison 
            String obj2 = "a"; 
  
            // compare both object 
            // using equals() mehtod 
            boolean i = col.equals(obj1, obj2); 
  
            // display result 
            if (i) 
                System.out.println(obj1 
                                   + " is equal to "
                                   + obj2); 
            else
                System.out.println(obj1 
                                   + " is not equal to "
                                   + obj2); 
        } 
  
        catch (ClassCastException e) { 
  
            System.out.println("Exception thrown:" + e); 
        } 
    } 
}

輸出：

a is equal to a

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

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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(String, String) 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。