java - cannot be cast to [Ljava.lang.Comparable -


so need dynamic ordered list.

    public class dynarraylistord<t extends comparable<t>>  {         private t[] tab ;          public dynarraylistord()         {           tab = (t[])new object[startsize];         }         ....          main {           dynarraylistord tab = new dynarraylistord();            tab.add("john");           tab.add("steve");         }

and when run code error:

exception in thread "main" java.lang.classcastexception: [ljava.lang.object; cannot cast [ljava.lang.comparable;     @ structures.dynarraylistord.<init>(dynarraylistord.java:14)     @ structures.dynamicarrayappp.main(dynarraylistord.java:119)

the erased type of t[] tab comparable[]. thus, need use type in constructor:

public dynarraylistord() {     tab = (t[]) new comparable[startsize]; }

you should enable unchecked warnings avoid these kinds of problems in first place.


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