Method for running the while loop in JAVA

A while loop is required to continuously detect the state of a sensor and adjust the robot's posture.

However, this while loop needs to be run regularly and automatically jumps out after about 10 seconds of running.

After searching for a long time on the Internet, I still did not find any available solutions.

After studying the problem, I used date to calculate the time difference and solved the problem.

While is the most basic loop. Its structure is:

While (Boolean expression ){
// Loop content
}

As long as the Boolean expression is true, the loop continues to execute.

Source code

// Initialize the variable
Date before = new Date ();
Date now = new Date ();
 
// Timed cycle
While (t <= 10 // cycle time ){
 
// Calculate the total cycle duration
Now = new Date ();
T = (now. getTime ()-before. getTime ()/1000;
 
// Loop content
           
}
Analysis

Before defines the previous time

Now is the current time after each loop

T is the time difference, in seconds

Example

Instance

Public class Test {
Public static void main (String args []) {
Int x = 10;
While (x <20 ){
System. out. print ("value of x:" + x );
X ++;
System. out. print ("\ n ");
      }
   }
}

The above example compilation and running results are as follows:

Value of x: 10
Value of x: 11
Value of x: 12
Value of x: 13
Value of x: 14
Value of x: 15
Value of x: 16
Value of x: 17
Value of x: 18
Value of x: 19