方法

public class TestMethod {
public static void main(String[] args) {
m();
m2(2);
m3('3', 4);
m4(4, 6);
int i = m4(4, 6);
System.out.println(i);
}

public static void m() {
//return;
System.out.println("ok");
System.out.println("hello");
}

public static void m2(int i) {
if(i > 3) 
return;
System.out.println(i);
}

public static void m3(int i, int j) {
System.out.println(i + j);
}

public static int m4(int i, int j) {
return i > j ? i : j;
}

}