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javahashtable

Unable to import Hashtable in Java

I am running a simple java program and import java.util.Hashtable<Integer, String>; will not compile. The command line says:

practice1.java:1: error: ';' expected
import java.util.Hashtable<Integer, String>;
                          ^
1 error

But this doesn't make any sense.

Edit:

I tried import java.util.Hashtable;, but it gave me an error:

Note: practice1.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.

Solution

  • Just

    import java.util.Hashtable;

    But you really want to use Map and probably HashMap instead.

    import java.util.HashMap;
import java.util.Map;

// ...

Map<Integer, String> myMap = new HashMap<>();