用示例编写 Java 中的 hashCode()方法
原文:https://www . geesforgeks . org/writer-hashcode-method-in-Java-with-example/
Java 中类的 hashCode() 方法用来获取这个 Writer 实例的 hashCode 值。此方法不接受任何参数，并返回所需的 int 值。
语法:
public int hashCode()
参数:此方法接受不接受任何参数。
返回值:这个方法返回一个 int 值，它是 Writer 实例的 HashCode 值。
下面的方法说明了 hashCode()方法的工作原理:
程序 1:
// Java program to demonstrate
// Writer hashCode() method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a Writer instance
Writer writer
= new PrintWriter(System.out);
// Get the String
// to be written in the stream
String string = "GeeksForGeeks";
// Write the string
// to this writer using write() method
writer.write(string);
// Get the HashCode value using hashCode()
System.out.println("HashCode value: "
+ writer.hashCode());
}
catch (Exception e) {
System.out.println(e);
}
}
}
Output:
HashCode value: 589431969
程序 2:
// Java program to demonstrate
// Writer hashCode() method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a Writer instance
Writer writer
= new PrintWriter(System.out);
// Get the String
// to be written in the stream
String string = "GFG";
// Write the string
// to this writer using write() method
writer.write(string);
// Get the HashCode value using hashCode()
System.out.println("HashCode value: "
+ writer.hashCode());
}
catch (Exception e) {
System.out.println(e);
}
}
}
Output:
HashCode value: 589431969
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