Storing the alphabet through a queue

I'm trying to store the alphabet with a queue which length is 100, and to generate some errors with another small queue of value 4, if then the queue is full, as it should be in small queue, it prints "The queue is full" this is the code:

class Queue {
char q[];
int putloc, getloc;
Queue(int size) {
q = new char[size];
putloc = getloc = 0;
}
void put(char ch) {
if(putloc == q.length) {
System.out.println(" - Queue is full.");
return;
}
q[putloc++] = ch;
}
char get() {
if(getloc == putloc) {
System.out.println(" - Queue is empty.");
return (char) 0;
}
return q[getloc++];
}
}
class name {
public static void main(String args[]) {
Queue bigQ = new Queue(100);
Queue smallQ = new Queue(4);
char ch;
int i;
System.out.println("Using bigQ to store the alphabet.");
for(i=0; i < 5; i++) {
ch = 'A';
System.out.println("Attemping to store " + (char) ('A' + i));
smallQ.put((char) ('A' - i));
System.out.print(ch);
System.out.println("\n");
System.out.println("Using smallQ to generate errors.");
for(i=0; i < 5; i++) {
ch = 'Z';
System.out.println("Attemping to store " + (char) ('Z' - i));
smallQ.put((char) ('Z' - i));
System.out.println();
}
System.out.println();
System.out.print("Contents of smallQ: ");
for(i=0; i < 5; i++) {
ch = smallQ.get();
if(ch != (char) 0) System.out.println(ch);
}
}
}
}

The output of smallQ works, but the output of bigQ just prints the letter 'A' once, what can I do?

You had 2 bugs in this code which were:

1. For loop
2. You haven't used bigQ at all.

1.For loop: When we right for loop or if or while or do while if there's only one statement that is:

for(int i = 0; i <= 5 ; i++)
System.out.println("Running"+i);
System.out.println("Stop");

output:

Running0
Running1
Running2
Running3
Running4
Running5
Stop

the above code just executes the below line of code for 6 times and then print Stop
so if you didnt put brackets around loop it will just execute the line below it and go to the next line.
<br>
But when you write for loop with brackets it executes everything that's in the { }
example:

for(int i = 0 ; i <= 5 ;i++) {
System.out.println("Running"+i);
System.out.println("Stop");
}

Output:

Running0
Stop
Running1
Stop
Running2
Stop
Running3
Stop
Running4
Stop
Running5
Stop

Your for loop had the same issue you haven't closed the loop where it was necessary<br>

2: You hadn't used bigQ at all in your code there was only samllQ in your first for loop and second for loop.

Fixed class name code below:

class Test {
public static void main(String args[]) {
Queue bigQ = new Queue(100);
Queue smallQ = new Queue(4);
char ch;
int i;
System.out.println("Using bigQ to store the alphabet.");
for(i=0; i < 5; i++) {
ch = 'A';
System.out.println("Attemping to store " + (char) ('A' + i));
bigQ.put((char) ('A' - i));// <--changed
} // <--changed
System.out.println("\n");
System.out.println("Using smallQ to generate errors.");
for(i=0; i < 5; i++) {
ch = 'Z';
System.out.println("Attemping to store " + (char) ('Z' - i));
smallQ.put((char) ('Z' - i));
System.out.println();
}
System.out.println();
System.out.print("Contents of smallQ: ");
for(i=0; i < 5; i++) {
ch = smallQ.get();
if(ch != (char) 0) System.out.println(ch);
}
}
}

Output:

Using bigQ to store the alphabet.
Attemping to store A
Attemping to store B
Attemping to store C
Attemping to store D
Attemping to store E
Using smallQ to generate errors.
Attemping to store Z
Attemping to store Y
Attemping to store X
Attemping to store W
Attemping to store V
- Queue is full.
Contents of smallQ: Z
Y
X
W
- Queue is empty.