There is no difference in bytecode between while(true)
and for(;;)
but I prefer while(true)
since it is less confusing (especially for someone new to Java).
You can check it with this code example
void test1(){
for (;;){
System.out.println("hello");
}
}
void test2(){
while(true){
System.out.println("world");
}
}
When you use command javap -c ClassWithThoseMethods
you will get
void test1();
Code:
0: getstatic #15 // Field java/lang/System.out:Ljava/io/PrintStream;
3: ldc #21 // String hello
5: invokevirtual #23 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
8: goto 0
void test2();
Code:
0: getstatic #15 // Field java/lang/System.out:Ljava/io/PrintStream;
3: ldc #31 // String world
5: invokevirtual #23 // Method java/io/PrintStream.println:(Ljava/lang/String;)V
8: goto 0
which shows same structure (except “hello” vs “world” strings) .