Java 中的 StringWriter getClass()方法，带示例
原文:https://www . geesforgeks . org/stringwriter-getclass-method-in-Java-with-examples/
Java 中 StringWriter 类的 getClass() 方法用来获取这个 StringWriter 实例的父类。此方法不接受任何参数，并返回所需的类详细信息。
语法:
公共最终类字符串 getClass()
参数:此方法接受不接受任何参数。
返回值:这个方法返回类细节，它是 StringWriter 实例的父类。
下面的方法说明了 getClass()方法的工作原理:
程序 1:
// Java program to demonstrate
// StringWriter getClass() method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a StringWriter instance
StringWriter writer
= new StringWriter();
// 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 Class details using getClass()
System.out.println("Parent Class: "
+ writer.getClass());
}
catch (Exception e) {
System.out.println(e);
}
}
}
Output:
Parent Class: class java.io.StringWriter
程序 2:
// Java program to demonstrate
// StringWriter getClass() method
import java.io.*;
class GFG {
public static void main(String[] args)
{
try {
// Create a StringWriter instance
StringWriter writer
= new StringWriter();
// 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 Class details using getClass()
System.out.println("Parent Class: "
+ writer.getClass());
}
catch (Exception e) {
System.out.println(e);
}
}
}
Output:
Parent Class: class java.io.StringWriter
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