Step 1: OPEN CMD and set the class path

set CLASSPATH=bcmail-jdk16-1.44.jar;bcprov-jdk16-1.44.jar;gson-2.10.1.jar;

Step 2: javac -cp "bcprov-jdk16-1.44.jar;bcmail-jdk16-1.44.jar;" p2j.java

Step 3:java p2j certificate.pfx emudhra output.jks

step 4: Change all the input data as per requirement in pkcs7gen.java file.

Step 5:javac -cp "bcprov-jdk16-1.44.jar;bcmail-jdk16-1.44.jar;gson-2.10.1.jar;" pkcs7gen.java

Step 6: java pkcs7gen output.jks emudhra data1.sig

Step 7: Change all the request header value in APIBasedAPIHit.java file.

Step 8: javac -cp "bcprov-jdk16-1.44.jar;bcmail-jdk16-1.44.jar;" APIBasedAPIHit.java

Step 9: java APIBasedAPIHit data1.sig