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Program: How to convert list to csv string format?


Description:

This example shows how to convert given list of strings to comma seperated values (csv) format.


Code:
package com.java2novice.arraylist;

import java.util.ArrayList;
import java.util.List;

public class MyListToCsvString {

	public String getListAsCsvString(List<String> list){
		
		StringBuilder sb = new StringBuilder();
		for(String str:list){
			if(sb.length() != 0){
				sb.append(",");
			}
			sb.append(str);
		}
		return sb.toString();
	}
	
	public static void main(String a[]){
		
		List<String> li1 = new ArrayList<String>(){
			{
				this.add("animal");
				this.add("nuts");
				this.add("java");
			}
		};
		MyListToCsvString mtc = new MyListToCsvString();
		System.out.println(mtc.getListAsCsvString(li1));
		List<String> li2 = new ArrayList<String>(){
			{
				this.add("java");
				this.add("unix");
				this.add("c++");
			}
		};
		System.out.println(mtc.getListAsCsvString(li2));
	}
}

Output:
animal,nuts,java
java,unix,c++
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  13. How to convert list to csv string format?
Knowledge Centre
Procedural Vs Object-oriented Programs
In procedural program, programming logic follows certain procedures and the instructions are executed one after another. In OOP program, unit of program is object, which is nothing but combination of data and code.

In procedural program, data is exposed to the whole program whereas in OOPs program, it is accessible with in the object and which in turn assures the security of the code.
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About Author

I'm Nataraja Gootooru, programmer by profession and passionate about technologies. All examples given here are as simple as possible to help beginners. The source code is compiled and tested in my dev environment.

If you come across any mistakes or bugs, please email me to [email protected].

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Reference: Java™ Platform Standard Ed. 7 - API Specification | Java™ Platform Standard Ed. 8 - API Specification | Java is registered trademark of Oracle.
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