Java 中 StringWriter hashCode()方法，带示例
原文:https://www . geesforgeks . org/stringwriter-hashcode-method-in-Java-with-examples/
Java 中 StringWriter 类的 hashCode() 方法用来获取这个 StringWriter 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 StringWriter 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
// StringWriter hashCode() method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a StringWriter instance
StringWriter StringWriter
= new StringWriter();
// Get the String
// to be written in the stream
String string = "GeeksForGeeks";
// Write the string
// to this StringWriter using write() method
StringWriter.write(string);
// Get the HashCode value using hashCode()
System.out.println("HashCode value: "
+ StringWriter.hashCode());
}
catch (Exception e) {
System.out.println(e);
}
}
}
Output:
HashCode value: 589431969
程序 2:
// Java program to demonstrate
// StringWriter hashCode() method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a StringWriter instance
StringWriter StringWriter
= new StringWriter();
// Get the String
// to be written in the stream
String string = "GFG";
// Write the string
// to this StringWriter using write() method
StringWriter.write(string);
// Get the HashCode value using hashCode()
System.out.println("HashCode value: "
+ StringWriter.hashCode());
}
catch (Exception e) {
System.out.println(e);
}
}
}
Output:
HashCode value: 589431969
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