Java中的 ParsePosition hashCode() 方法与示例

Java.text.ParsePosition类的hashCode()方法用于检索当前解析位置对象的哈希码。

句法：

public int hashCode()

参数：此方法不接受任何参数作为参数。

返回值：该方法返回当前解析位置对象的哈希码。

以下是说明hashCode()方法的示例：

示例 1：

// Java program to demonstrate
// hashCode() method
  
import java.text.*;
import java.util.*;
import java.io.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        try {
  
            // Creating and initializing
            // new ParsePosition Object
            ParsePosition pos
                = new ParsePosition(500);
  
            // getting hashCode for
            // current ParsePosition Object
            // using getIndex() method
            int i = pos.hashCode();
  
            // display result
            System.out.println(
                "hashCode: "
                + Integer.toString(i));
        }
  
        catch (ClassCastException e) {
  
            System.out.println(e);
        }
    }
}

输出：

hashCode: -65036

示例 2：

// Java program to demonstrate
// hashCode() method
  
import java.text.*;
import java.util.*;
import java.io.*;
  
public class GFG {
    public static void main(String[] argv)
    {
        try {
  
            // Creating and initializing
            // new ParsePosition Object
            ParsePosition pos
                = new ParsePosition(-1);
  
            // getting hashCode for
            // current ParsePosition Object
            // using getIndex() method
            int i = pos.hashCode();
  
            // display result
            System.out.println(
                "hashCode: "
                + Integer.toString(i));
        }
  
        catch (ClassCastException e) {
  
            System.out.println(e);
        }
    }
}

输出：

hashCode: -1

参考： https://docs.oracle.com/javase/9/docs/api/ Java/text/ParsePosition.html#hashCode–