Java6 : 50 Bytes

In Java 6 and previous versions you can execute static initialization block without having main in your class file.

class A{static{for(int i=1;i>0;);System.exit(0);}}

Java6 : 25 Bytes

In Java 6 and previous versions you can execute static initialization block without having main in your class file.

class A{static{for(;;);}}

#Java6 : 50 Bytes

In Java 6 and previous versions you can execute static initialization block without having main in your class file.

class A{static{for(int i=1;i>0;);System.exit(0);}}

Java6 : 50 Bytes

In Java 6 and previous versions you can execute static initialization block without having main in your class file.

class A{static{for(int i=1;i>0;);System.exit(0);}}

#Java6 : 35 Bytes

In Java 6 and previous versions you can execute static initialization block without having main in your class file.

class A{static{for(int i=1;i>0;);}}

#Java6 : 50 Bytes

In Java 6 and previous versions you can execute static initialization block without having main in your class file.

class A{static{for(int i=1;i>0;);System.exit(0);}}