java.lang.NumberFormatException: empty String

at jdk.internal.math.FloatingDecimal.readJavaFormatString(FloatingDecimal.java:1842)

at jdk.internal.math.FloatingDecimal.parseDouble(FloatingDecimal.java:110)

at java.lang.Double.parseDouble(Double.java:662)

at com.gjyndyz.zdjm$6.run(zdjm.java:319)