Question

How to get a substring from StringBuilder() in Java

Answer 1

package javaapplication1;

import java.io.IOException;

public class JavaApplication1 {

    public static void main(String[] args) throws IOException {

        StringBuilder sb = new StringBuilder();
        sb.append("java");

        String s = sb.substring(2);
        System.out.println(s);

        s = sb.substring(0, 2);
        System.out.println(s);
    }
}


/*

run:
                   
va
ja
          
 */

 

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