How to solve error: ';' expected in Java? -

i have error: ';' expected issue java code below. don't know how solve it?

sortthread , mergethread have been created class, , compiled well.

the problem

sortthread t1.join() = new sortthread(a);   sortthread t2.join() = new sortthread(b);    mergethread m.start() = new mergethread(t1.get(),t2.get()); 

these 3 line codes has error: ';' expected issues.

in main, create 2 array, , b. m array merge a&b, , main display m.

any hints or solutions helpful me.

import java.util.random;  public class main{     public static void main(string[] args){        random r = new random(system.currenttimemillis());  int n = r.nextint(101) + 50; int[] = new int[n]; for(int = 0; < n; i++)   a[i] = r.nextint(100);  n = r.nextint(101) + 50; int[] b = new int[n]; for(int = 0; < n; i++)   b[i] = r.nextint(100);  sortthread t1.join() = new sortthread(a);   sortthread t2.join() = new sortthread(b);    mergethread m.start() = new mergethread(t1.get(),t2.get());  system.out.println(arrays.tostring(m.get()));   } } 

you can't call methods before finish initializing variables you're calling.

sortthread t1.join() = new sortthread(a);   sortthread t2.join() = new sortthread(b);    mergethread m.start() = new mergethread(t1.get(),t2.get()); 

should like

sortthread t1 = new sortthread(a);   t1.start(); // <-- want start before join. sortthread t2 = new sortthread(b); t2.start();   t1.join(); t2.join(); mergethread m = new mergethread(t1.get(),t2.get()); m.start(); m.join();