public void push(final String value){
  if (value == null) {
    mv.visitInsn(Opcodes.ACONST_NULL);
  }
 else {
    mv.visitLdcInsn(value);
  }
}

public void push ( final String value ) { if ( value == null ) { mv . visitInsn ( Opcodes . ACONST_NULL ) ; } else { mv . visitLdcInsn ( value ) ; } }
generates the instruction to push the given value on the stack .
