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Unsupported major.minor version 52.0 [duplicate]
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The issue is because of Java version mismatch. Referring to the Wikipedia Java Class Reference:
Java SE 14 = 58
Java SE 13 = 57
Java SE 12 = 56 (0x38 hex)
Java SE 11 = 55 (0x37 hex)
Java SE 10 = 54
Java SE 9 = 53
Java SE 8 = 52
Java SE 7 = 51
Java ...
Java code for getting current time [duplicate]
I am searching code in java for fetching or synchronizing my local PC system time into my application.
14 Answers
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Convert LocalDate to LocalDateTime or java.sql.Timestamp
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JodaTime
To convert JodaTime's org.joda.time.LocalDate to java.sql.Timestamp, just do
Timestamp timestamp = new Timestamp(localDate.toDateTimeAtStartOfDay().getMillis());
To convert JodaTime's org.joda.time.LocalDateTime to java.sql.Timestamp, just do
Timestamp timestamp = new Time...
App Inventor 2 解决一个编译报错DX failed - App Inventor 2 中文网 - 清...
...译失败，报错如下：
-----通过查看编译日志：
[java] indicate that it is *not* an inner class.
[java] Uncaught translation error: java.lang.IllegalArgumentException: already added: Lorg/eclipse/paho/client/mqttv3/BufferedMessage;
&nbs...
How to convert currentTimeMillis to a date in Java?
... FYI, the terribly troublesome old date-time classes such as java.util.Date, java.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes built into Java 8 and later. See Tutorial by Oracle.
– Basil Bourque
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Environment variables for java installation
How to set the environment variables for Java in Windows (the classpath)?
14 Answers
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How to set java_home on Windows 7?
...bles, one for user variables and one for system variables. Both were named JAVA_HOME and both pointing to
18 Answers
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Adding n hours to a date in Java?
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cal.setTime(new Date()) is not needed - the javadoc of Calendar.getInstance() says: "The Calendar returned is based on the current time in the default time zone with the default locale."
– mithrandir
Dec 10 '14 at 9:54
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Java: getMinutes and getHours
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Try using Joda Time instead of standard java.util.Date classes. Joda Time library has much better API for handling dates.
DateTime dt = new DateTime(); // current time
int month = dt.getMonth(); // gets the current month
int hours = dt.getHourOfDay(); // gets...
javac is not recognized as an internal or external command, operable program or batch file [closed]
I am experiencing an error while trying to compile Java programs.
6 Answers
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