java - Syntax Error, insert ". class" to complete expression 5 -

import java.util.random; public class randomwalker {    public static void main(string[] args) {       int n = integer.parseint(args[0]);       int x = 0;       int y = 0;       int = 0;       int distance = 0;       random rand = new random();        system.out.println("(" + "0" + "," + "0" + ")");          while (i<n) {        if (i=n)            int val = rand.nextint(4) + 1;         = i+1;           if (val==1) {               y = y+1;               if (i = n - 1) {                   distance = ((math.pow((x-0), 2)) + (math.pow((y-0), 2)));                   system.out.println("squared " + "distance " + "= " + distance);               }               else {               system.out.println("(" + x + "," + y + ")");               }           }           if (val==2) {               x = x+1;               if (i = n - 1) {                   distance = ((math.pow((x-0), 2)) + (math.pow((y-0), 2)));                   system.out.println("squared " + "distance " + "= " + distance);               }               else {               system.out.println("(" + x + "," + y + ")");               }           }           if (val==3) {               y = y-1;               if (i = n - 1) {                   distance = ((math.pow((x-0), 2)) + (math.pow((y-0), 2)));                   system.out.println("squared " + "distance " + "= " + distance);               }               else {               system.out.println("(" + x + "," + y + ")");               }           }           if (val==4) {               x = x-1;               if (i = n - 1) {                   distance = ((math.pow((x-0), 2)) + (math.pow((y-0), 2)));                   system.out.println("squared " + "distance " + "= " + distance);               }               else {               system.out.println("(" + x + "," + y + ")");               }           }       }    }   }  

hey guys trying make code relies on random number being generated between 1 , 4 , getting error above. working fine before added other stuff didn't involve random number generation.

fix huge amount of syntax errors type mismatches first, , follow elliott's advice on forgotten = in of if statements involving i , n, missing curly brace after it. there's missing curly brace @ end of program.

by way, forgot cast expression ((math.pow((x-0), 2)) + (math.pow((y-0), 2))) int. why - 0, way?

after that, problem disappears.

please debug as possible ability, before asking.

fixed code (i didn't run it, though)

import java.util.random; public class randomwalker {      public static void main(string[] args) {         int n = integer.parseint(args[0]);         int x = 0;         int y = 0;         int = 0;         int distance = 0;         random rand = new random();          system.out.println("(" + "0" + "," + "0" + ")");            while (i<n) {             if (i==n) {                 int val = rand.nextint(4) + 1;                 = i+1;                 if (val==1) {                     y = y+1;                     if (i == n - 1) {                         distance = (int)((math.pow((x-0), 2)) + (math.pow((y-0), 2)));                         system.out.println("squared " + "distance " + "= " + distance);                     }                     else {                         system.out.println("(" + x + "," + y + ")");                     }                 }                 if (val==2) {                     x = x+1;                     if (i == n - 1) {                         distance = (int)((math.pow((x-0), 2)) + (math.pow((y-0), 2)));                         system.out.println("squared " + "distance " + "= " + distance);                     }                     else {                         system.out.println("(" + x + "," + y + ")");                     }                 }                 if (val==3) {                     y = y-1;                     if (i == n - 1) {                         distance = (int)((math.pow((x-0), 2)) + (math.pow((y-0), 2)));                         system.out.println("squared " + "distance " + "= " + distance);                     }                     else {                         system.out.println("(" + x + "," + y + ")");                     }                 }                 if (val==4) {                     x = x-1;                     if (i == n - 1) {                         distance = (int)((math.pow((x-0), 2)) + (math.pow((y-0), 2)));                         system.out.println("squared " + "distance " + "= " + distance);                     }                     else {                         system.out.println("(" + x + "," + y + ")");                     }                 }             }         }       } }