This semester school has opened a Java elective class, but he has never been going on.
Mainly, the teacher said that it is too passionate to listen to him.
A few days, because some things need to use Java, they finally put JDK.
In fact, when writing this article, it is no longer a first trial.
Because it is installed on the JDK, I wrote a HelloWorld according to the practice.
There is a little feeling for Java.
However, the Java compiler check is too strict, it is very uncomfortable.
I also have a unknown premonition - will definitely worry about debugging Java programs.
I don't think so far this day is so fast.
I was still in the coding theory class this morning, my girlfriend sent a text message, let me help her with Java write a quick sorting program.
This is a bit difficult to fell. After all, I used Java and just wrote a HelloWorld.
Basically, what is also known
However, since it is a girlfriend, I have to try again.
So the class immediately returned to the bedroom.
The program writes to a smooth foaming method or it is difficult to fall.
But bigger problems are still behind
I used Javac to compile together with Java as follows, the source program is as follows:
Public class sort {public static void main (string args []) {int Arr [] = {95, 23, 45, 66, 79, 84, 100, 54, 87, 67, 94, 81, 83, 76, 84, 66 88, 91, 25, 77, 84, 22, 56, 78, 49, 83, 89, 86, 84, 44};
For (int i = 0; I Perform C: /> Javac Sort.java everything is normal Then execute again C: /> java sortexception in thread "main" java.lang.ArrayindexOutofboundsexception: 30 at sort.main (Sort.java: 11) Old is wrong, I have to be depressed. I am not very familiar with Java. I am in order to facilitate the things you want to realize in the main () function. I don't know if there is any problem, I haven't checked it yet. I have tried many times in other ways. If you change the definition of the array: Int arr [] = new int rt [30]; Arr [0] = 45; Arr [1] = ... The result is still I checked some information on the Internet. I have exactly the same way as the definition above, but I have to be big. I didn't expect to write a small program with Java to be so depressed. I am bitter.
