Java 中 StringWriter 等于()方法，示例

原文:https://www . geesforgeks . org/stringwriter-equals-method-in-Java-with-example/

爪哇T2T4。Java 中 StringWriter 类的 equals(Object obj) 方法用于检查 StringWriter 的两个实例是否相等。它返回一个布尔值，说明它们是否相等。

签名:

公共布尔等于(StringWriter second _ StringWriter)

语法:

first_StringWriter.equals(second_StringWriter)

参数:该方法接受一个强制参数 second_StringWriter ，该参数是指要与第一个 StringWriter 进行比较的第二个 StringWriter。

返回值:该方法返回真如果等式成立，并且对象和字符串书写器都相等，则返回假。

下面的程序用来说明 java.io.StringWriter.elements()方法的工作原理:

程序 1:

// Java code to illustrate the equals() method

import java.io.*;

public class StringWriter_Demo {
    public static void main(String[] args)
    {

        // Creating an empty StringWriter
        StringWriter writer1 = new StringWriter();

        // Inserting elements into the StringWriter
        writer1.write("GeeksForGeeks");

        // Displaying the StringWriter
        System.out.println("StringWriter 1: "
                           + writer1.toString());

        // Creating an empty StringWriter
        StringWriter writer2 = new StringWriter();

        // Inserting elements into the StringWriter
        writer2.write("GFG");

        // Displaying the StringWriter
        System.out.println("StringWriter 2: "
                           + writer2.toString());

        System.out.println("Are both of them equal? "
                           + writer1.equals(writer2));
    }
}

Output:

StringWriter 1: GeeksForGeeks
StringWriter 2: GFG
Are both of them equal? false

程序 2:

// Java code to illustrate the equals() method

import java.io.*;

public class StringWriter_Demo {
    public static void main(String[] args)
    {

        // Creating an empty StringWriter
        StringWriter writer1 = new StringWriter();

        // Inserting elements into the StringWriter
        writer1.write("GFG");

        // Displaying the StringWriter
        System.out.println("StringWriter 1: "
                           + writer1.toString());

        // Creating an empty StringWriter
        StringWriter writer2 = new StringWriter();

        // Inserting elements into the StringWriter
        writer2.write("GFG");

        // Displaying the StringWriter
        System.out.println("StringWriter 2: "
                           + writer2.toString());

        System.out.println("Are both of them equal? "
                           + writer1.equals(writer2));
    }
}

Output:

StringWriter 1: GFG
StringWriter 2: GFG
Are both of them equal? false

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