Java Learning Notes

Once a very rough time of Java, reached the level of writing some of the most basic code, until now found that some of the Java learned in the past can not be used to find the degree of work, and recently picked up Java to learn again Ah, This is where you record some Java knowledge that you didn't know before or what you think is more important.

Use of 1.Set

Java uses set cannot use the new set () directly as C #, but must use its derived class, it is difficult to understand, hope to read the book can understand the meaning, now only to write

1 set<integer> c=new hashset<integer> ();

Not to be continued

Java Learning Notes