Use https://mvnrepository.com/artifact/org.bouncycastle/bcprov-jdk15on for java aes 128 cbc pcks7.

MyAES.java

package hello;

import org.bouncycastle.jce.provider.BouncyCastleProvider;
import org.bouncycastle.util.encoders.Base64;

import java.nio.charset.StandardCharsets;
import java.security.NoSuchAlgorithmException;
import java.security.Security;
import java.security.spec.AlgorithmParameterSpec;

import javax.crypto.Cipher;
import javax.crypto.NoSuchPaddingException;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;

public class MyAES {

  static {
    Security.addProvider(new BouncyCastleProvider());
  }

  private final SecretKeySpec secretKeySpec;
  private final AlgorithmParameterSpec paramSpec;
  private Cipher cipher;


  public MyAES(final String iv, final String key) {
    this.secretKeySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
    this.paramSpec = new IvParameterSpec(iv.getBytes(StandardCharsets.UTF_8));
    try {
      this.cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");
    } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
      // Never should be here
      e.printStackTrace();
    }
  }

  public static void main(String[] args) throws Exception {
    Security.addProvider(new BouncyCastleProvider());

    final String plainText = "hello world";
    final MyAES aes = new MyAES("J@JAFU&zcVyFyuA5", "cUa8tPn4UCYVa%Vw");
    final String encryptedText = aes.encrypt(plainText);
    System.out.printf("Original string: %s\n", plainText);
    System.out.printf("Encrypted string: %s\n", encryptedText);
    System.out.printf("Encrypted string: %s\n", aes.decrypt(encryptedText));
  }

  public String encrypt(final String value) throws Exception {
    cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec, paramSpec);
    return new String(Base64.encode(cipher.doFinal(value.getBytes(StandardCharsets.UTF_8))));
  }

  public String decrypt(final String value) throws Exception {
    cipher.init(Cipher.DECRYPT_MODE, secretKeySpec, paramSpec);
    return new String(cipher.doFinal(Base64.decode(value.getBytes(StandardCharsets.UTF_8))));
  }
}