JAVA Cheat Sheet by pca221

int temp = e1;
e1 = e2;
e2 = temp;

while(condition) {
//codes
}

string word = "Hello";
for (char c: word.toCharArray()){
     system.out.println()
     ...
}

public class ABCD {
     public A () {
          //codes
     }
     public void B() {
          //codes
     }
}




*public A = default, run automatic
*public void B = need call

do {
   //codes
} while (condition);

int mylist = {100,200,300,400};
for(int item = 0; item< mylist.length; iterm++){
  //codes
}

for(int item mylist) {
  //codes
}

int[] mylist = new int[2]
mylist[0] = 100;
mylist[1] = 200;

int[] mylist = {100, 200}