Java中的 Collator equals(String, String) 方法与示例

Java.text.Collator 类的equals()方法用于检查两个字符串是否相同。

句法：

public boolean equals(String source,
                      String target)

参数：此方法采用两个字符串，将在它们之间进行比较。

返回值：如果两个字符串相等，则返回true否则返回false 。

以下是说明equals()方法的示例：

示例 1：

Java

// 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() method
            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);
        }
    }
}

输出：

a is not equal to A

示例 2：

Java

// 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() method
            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);
        }
    }
}

输出：

a is equal to a

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