El método Java.io.Writer.equals(Object obj) de la clase Writer en Java se utiliza para verificar si las dos instancias de Writer son iguales o no. Devuelve un valor booleano que indica si son iguales o no.
Firma:
public boolean equals(Writer second_Writer)
Sintaxis:
first_Writer.equals(second_Writer)
Parámetros: este método acepta un parámetro obligatorio second_Writer que se refiere al segundo escritor para compararlo con el primero.
Valor devuelto: el método devuelve verdadero si se mantiene la igualdad y tanto los objetos como Writer son iguales; de lo contrario, devuelve falso .
Los siguientes programas se utilizan para ilustrar el funcionamiento del método java.io.Writer.elements():
Programa 1:
// Java code to illustrate the equals() method
import java.io.*;
public class Writer_Demo {
public static void main(String[] args)
{
try {
// Creating an empty Writer
Writer writer1 = new PrintWriter(System.out);
// Inserting elements into the Writer
writer1.write("GeeksForGeeks");
// Displaying the Writer
System.out.println("Writer 1: "
+ writer1.toString());
// Creating an empty Writer
Writer writer2 = new PrintWriter(System.out);
// Inserting elements into the Writer
writer2.write("GFG");
// Displaying the Writer
System.out.println("Writer 2: "
+ writer2.toString());
System.out.println("Are both of them equal? "
+ writer1.equals(writer2));
}
catch (Exception e) {
System.out.println(e);
}
}
}
Producción:
Writer 1: java.io.PrintWriter@232204a1 Writer 2: java.io.PrintWriter@4aa298b7 Are both of them equal? false
Programa 2:
// Java code to illustrate the equals() method
import java.io.*;
public class Writer_Demo {
public static void main(String[] args)
{
try {
// Creating an empty Writer
Writer writer1 = new PrintWriter(System.out);
// Inserting elements into the Writer
writer1.write("GFG");
// Displaying the Writer
System.out.println("Writer 1: "
+ writer1.toString());
// Creating an empty Writer
Writer writer2 = new PrintWriter(System.out);
// Inserting elements into the Writer
writer2.write("GFG");
// Displaying the Writer
System.out.println("Writer 2: "
+ writer2.toString());
System.out.println("Are both of them equal? "
+ writer1.equals(writer2));
}
catch (Exception e) {
System.out.println(e);
}
}
}
Producción:
Writer 1: java.io.PrintWriter@232204a1 Writer 2: java.io.PrintWriter@4aa298b7 Are both of them equal? false