package cn.stylefeng.guns.base.enums;
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import java.text.SimpleDateFormat;
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/**
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* Class to generate timestamps with microsecond precision
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* For example: MicroTimestamp.INSTANCE.get() = "2012-10-21 19:13:45.267128"
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*/
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public enum MicroTimestamp
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{
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INSTANCE ;
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private long startDate ;
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private long startNanoseconds ;
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private SimpleDateFormat dateFormat ;
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private MicroTimestamp()
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{ this.startDate = System.currentTimeMillis() ;
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this.startNanoseconds = System.nanoTime() ;
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this.dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS") ;
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}
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public String get()
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{ long microSeconds = (System.nanoTime() - this.startNanoseconds) / 1000 ;
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long date = this.startDate + (microSeconds/1000) ;
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return this.dateFormat.format(date) + String.format("%03d", microSeconds % 1000) ;
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}
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}
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