Test cases:
{[]
{{()}}
]][[
[[]]
[()()]

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.charset.StandardCharsets;
import java.util.Map;

public class Main {
    /**
     * Iterate through each line of input.
     */
    public static void main(String[] args) throws IOException {
        InputStreamReader reader = new InputStreamReader(System.in, StandardCharsets.UTF_8);
        BufferedReader in = new BufferedReader(reader);
        String line;
        while ((line = in.readLine()) != null) {
            char[] chars = line.toCharArray();
            // Odd number of chars will never be well-formed
            if (chars.length%2 != 0) {
                System.out.println("False");
                continue;
            }

            boolean isWellFormed = true;
            for (int i = 0; i < chars.length/2; i++) {
                char lhs = chars[i];
                char rhs = chars[chars.length-i-1];

                if (!charsMatch(lhs, rhs)) {
                    isWellFormed = false;
                    break;
                }
            }

            if (isWellFormed) {
                System.out.println("True");
            } else {
                System.out.println("False");
            }
        }
    }

    private static boolean charsMatch(char lhs, char rhs) {
        return (lhs == '(' && rhs == ')') ||
                (lhs == '[' && rhs == ']') ||
                (lhs == '{' && rhs == '}');
    }
}