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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		// your code goes here
  13. 		Calendar cal = Calendar.getInstance();
  14. 		long lngUnique = 0l;
  15. 		String strUnique = "";
  16.  
  17. 		lngUnique = cal.getTimeInMillis();
  18. 		strUnique = String.valueOf(lngUnique);
  19.  
  20. 		System.out.println("ミリ秒取得値：" + strUnique);
  21. 		System.out.println("ハッシュコード：" + strUnique.hashCode());
  22.  
  23. 		System.out.println("ハッシュコード(２回目)：" + strUnique.hashCode());
  24. 	}
  25. }
Success #stdin #stdout 0.06s 2184192KB
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stdin
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Standard input is empty
stdout
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ミリ秒取得値：1556069796518
ハッシュコード：2019619222
ハッシュコード(２回目)：2019619222
https://ideone.com/Qy5Y58
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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