Q:

Java Convert Object to String

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robaa
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2022-11-12
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We can convert Object to String in java using toString() method of Object class or String.valueOf(object) method.

You can convert any object to String in java whether it is user-defined class, StringBuilder, StringBuffer or anything else.

Here, we are going to see two examples of converting Object into String. In the first example, we are going to convert Emp class object into String which is an user-defined class. In second example, we are going to convert StringBuilder to String.

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robaa
2022-11-12
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Java Object to String Example: Converting User-defined class

Let's see the simple code to convert String to Object in java.

class Emp{}  
public class ObjectToStringExample{  
public static void main(String args[]){  
Emp e=new Emp();  
String s=e.toString();  
String s2=String.valueOf(e);  
System.out.println(s);  
System.out.println(s2);  
}}

 

Output:

Emp@2a139a55
Emp@2a139a55

 

As you can see above, a reference id of Emp class is printed on the console.

Java Object to String Example: Converting StringBuilder

Let's see the simple code to convert StringBuilder object to String in java.

public class ObjectToStringExample2{  
public static void main(String args[]){  
String s="hello";  
StringBuilder sb=new StringBuilder(s);  
sb.reverse();  
String rev=sb.toString();//converting StringBuilder to String  
System.out.println("String is: "+s);  
System.out.println("Reverse String is: "+rev);  
}}

 

Output:

String is: hello
Reverse String is: olleh

Now you can write the code to check the palindrome string.

public class ObjectToStringExample3{  
public static void main(String args[]){  
String s="nitin";  
StringBuilder sb=new StringBuilder(s);  
sb.reverse();  
String rev=sb.toString();//converting StringBuilder to String  
if(s.equals(rev)){  
System.out.println("Palindrome String");  
}else{  
System.out.println("Not Palindrome String");  
}  
}}

 

Output:

Palindrome String

So, you can convert any Object to String in java using toString() or String.valueOf(object) methods.

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