question: public Object nextObject ( Random rnd , int type , boolean allowNull ) { Object obj = null ; switch ( type ) { case BOOLEAN : { obj = ( rnd . nextBoolean ( ) ? Boolean . TRUE : Boolean . FALSE ) ; break ; } case BYTE : { obj = Byte . valueOf ( ( byte ) ( rnd . nextInt ( 255 ) - 127 ) ) ; break ; } case CHAR : { obj = Character . valueOf ( alphabet . charAt ( rnd . nextInt ( alphabet . length ( ) ) ) ) ; break ; } case SHORT : { obj = Short . valueOf ( ( short ) rnd . nextInt ( ) ) ; break ; } case INT : { obj = Integer . valueOf ( rnd . nextInt ( ) ) ; break ; } case LONG : { obj = Long . valueOf ( rnd . nextLong ( ) ) ; break ; } case FLOAT : { obj = Float . valueOf ( rnd . nextFloat ( ) ) ; break ; } case DOUBLE : { obj = Double . valueOf ( rnd . nextDouble ( ) ) ; break ; } case STRING : { obj = getRandomString ( 40 , rnd . nextInt ( ) ) ; break ; } case OBJECT : { obj = getRandomString ( 40 , rnd . nextInt ( ) ) ; break ; } default : { throw new AssertionError ( "unknown type=" + type ) ; } } return obj ; }
target:  Return an instance of the specified type with a random value.