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Array Copy in Java - GeeksforGeeks

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clone() creates a new array of the same size, but System.arraycopy() can be used to copy from a source range to a destination range. System. 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ArrayCopyinJavaViewDiscussion ImproveArticle SaveArticle LikeArticle DifficultyLevel: EasyLastUpdated: 26Oct,2021ReadDiscussViewDiscussion ImproveArticle SaveArticle LikeArticle Givenanarray,weneedtocopyitselementsinadifferentarray,toanaiveuserbelowwaycomesintomindwhichishoweverincorrectasdepictedbelowasfollows://JavaProgramtoIllustrateWrongWayOfCopyinganArray //Inputarray inta[]={1,8,3}; //Creatinganarrayb[]ofsamesizeasa[] intb[]=newint[a.length]; //Doesn'tcopyelementsofa[]tob[],onlymakes //brefertosamelocation b=a;Output: OutputExplanation:Whenwedo“b=a”,weareactuallyassigningareferencetothearray.Hence,ifwemakeanychangetoonearray,itwouldbereflectedinotherarraysaswellbecausebothaandbrefertothesamelocation.Wecanalsoverifyitwithcodeasshownbelowasfollows:Example:Java//AJavaprogramtodemonstratethatsimply//assigningonearrayreferenceisincorrectpublicclassTest{    publicstaticvoidmain(String[]args)    {        inta[]={1,8,3};         //Createanarrayb[]ofsamesizeasa[]        intb[]=newint[a.length];         //Doesn'tcopyelementsofa[]tob[],        //onlymakesbrefertosamelocation        b=a;         //Changetob[]willalsoreflectina[]        //as'a'and'b'refertosamelocation.        b[0]++;         System.out.println("Contentsofa[]");        for(inti=0;i

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