Java中的 StringCharacterIterator equals() 方法及示例

Java中Java .text.StringCharacterIterator 类的equals()方法用于检查此StringCharacterIterator 与指定的StringCharacterIterator 是否相等。此方法采用 StringCharacterIterator 实例并将其与此 StringCharacterIterator 进行比较，并返回一个表示相同的布尔值。

句法：

public boolean equals(Object obj)

参数：此方法接受参数obj ，它是要检查与此 StringCharacterIterator 是否相等的 StringCharacterIterator。

返回值：此方法返回一个布尔值，用于判断此 StringCharacterIterator 是否等于指定的 Object。

异常：此方法不抛出任何异常。

程序：

// Java program to demonstrate
// the above method
  
import java.text.*;
import java.util.*;
  
public class StringCharacterIteratorDemo {
    public static void main(String[] args)
    {
  
        StringCharacterIterator sci1
            = new StringCharacterIterator(
                "GeeksforGeeks");
  
        System.out.println("StringCharacterIterator 1: "
                           + sci1);
  
        StringCharacterIterator sci2
            = new StringCharacterIterator(
                "Geeks for Geeks");
  
        System.out.println("StringCharacterIterator 2: "
                           + sci2);
  
        StringCharacterIterator sci3
            = (StringCharacterIterator)sci1
                  .clone();
  
        System.out.println("StringCharacterIterator 3: "
                           + sci3);
  
        System.out.println("Comparing DFS 1 and DFS 2: "
                           + sci1.equals(sci2));
  
        System.out.println("Comparing DFS 2 and DFS 3: "
                           + sci2.equals(sci3));
  
        System.out.println("Comparing DFS 1 and DFS 3: "
                           + sci1.equals(sci3));
    }
}

输出：

StringCharacterIterator 1: java.text.StringCharacterIterator@bd43b778
StringCharacterIterator 2: java.text.StringCharacterIterator@ac5740a8
StringCharacterIterator 3: java.text.StringCharacterIterator@bd43b778
Comparing DFS 1 and DFS 2: false
Comparing DFS 2 and DFS 3: false
Comparing DFS 1 and DFS 3: true

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