Today, the author received a question from the teacher, asking me to prepare two processes and output the following information in turn.
like:
Thread A prints letter a, thread B prints number 1
Thread A prints letter b, thread B prints number 2
Thread A prints letter c, thread B prints number 3
Thread A prints letter d, thread B prints number 4
。。。
Print 26 letters and 26 numbers in turn
, the output effect is:
a1b2c3...z26
The author will show the specific implementation ideas below:
1. Will use the multi-threaded wait method
2. With an external variable
package com.;
public class Test6 {
/*
* Two threads One thread output a b c d e f One thread output 1 2 3 4 5 Cross-output a 1 b 2 c 3
*/
static boolean flag = false;
public static void main(String[] args) {
Object o = new Object();
Thread t1, t2;
t1 = new Thread(() -> {
for (int i = 0; i < 26; ) {
synchronized (o) {
if (!flag) {
char t = (char) (i + (int) 'a');
(t);
i++;
try {
();
} catch (InterruptedException e) {
();
}
flag = false;
();
}
}
}
});
t2 = new Thread(() -> {
for (int i = 1; i <= 26;) {
synchronized (o) {
if (flag) {
(i);
i++;
try {
();
} catch (InterruptedException e) {
();
}
}
flag = true;
();
}
}
});
();
();
}
}
Reference information:
/JavaMianJing/202112/
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