Java Package hashCode()用法及代码示例

java.lang.Package类的hashCode()方法用于获取此包实例的hashCode值。该方法将hashCode值返回为整数值。

用法:

public int hashCode()

参数：此方法不接受任何参数。

返回值：此方法将hashCode值返回为整数值。

下面的程序演示了hashCode()方法。

范例1：

// Java program to demonstrate 
// hashCode() method 
  
public class Test { 
    public static void main(String[] args) 
    { 
  
        // returns the Package 
        // object for this package 
        Package myPackage 
            = Package.getPackage("java.lang"); 
  
        System.out.println( 
            "Package represented by myPackage:"
            + myPackage.toString()); 
  
        // get the hashCode value of this package 
        // using hashCode() method 
        System.out.println( 
            "hashCode value:"
            + myPackage.hashCode()); 
    } 
}

输出：

Package represented by myPackage:package java.lang, Java Platform API Specification, version 1.8
hashCode value:-888658374

范例2：

// Java program to demonstrate 
// hashCode() method 
  
public class Test { 
    public static void main(String[] args) 
    { 
  
        // returns the Package 
        // object for this package 
        Package myPackage 
            = Package.getPackage("java.io"); 
  
        System.out.println( 
            "Package represented by myPackage:"
            + myPackage.toString()); 
  
        // get the hashCode value of this package 
        // using hashCode() method 
        System.out.println( 
            "hashCode value:"
            + myPackage.hashCode()); 
    } 
}

输出：

Package represented by myPackage:package java.io, Java Platform API Specification, version 1.8
hashCode value:-1819917198

参考： https://docs.oracle.com/javase/9/docs/api/java/lang/Package.html#hashCode-

相关用法

注：本文由纯净天空筛选整理自guptayashgupta53大神的英文原创作品 Package hashCode() method in Java with Examples。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。