Java Hello World program without using a semicolon
KW.java
class KW
{
    public static void main(String args[])
    {
        if(System.console().writer().printf("Hello, World!\n")==null)
        {

        }
    }
}
KW.java
class KW
{
    public static void main(String args[])
    {
        if(System.out.format("%s", "Hello, World!\n")==null)
        {

        }
    }
}
KW.java
class KW
{
    static
    {
        if(System.out.printf("Hello, World!\n")==null)
        {

        }
    }
    public static void main(String args[])
    {

    }
}
KW.java
class KW
{
    public static void main(String args[])
    {
        if(System.out.printf("%c%c%c%c%c%c%c%c%c%c%c%c%c\n"
            ,72,101,108,108,111,44,32,87,111,114,108,100,33)==null)
        {

        }
    }
}
KW.java
class KW
{
    public static void main(String args[])
    {
        if(System.out.append("Hello, World!\n")instanceof Object)
        {

        }
    }
}
KW.java
class KW
{
    public static void main(String args[])
    {
        try 
        {
            if(System.out.getClass().getDeclaredMethod("println",Class
            .forName("java.lang.String")).invoke(System.out,"Hello, World!")==null)                 
            {

            }
        } 
        catch(Exception e) 
        {

        }
    }
}
KW.java
class KW
{
    public static void main(String args[])
    {
        if(System.out.printf("Hello, World!\n")==null)
        {

        }
    }
}
KW.java
class KW
{
    public static void main(String a[])
    {
        while(System.out.printf("Hello, World!\n")==null)
        {

        }
    }
}
KW.java
class KW
{
    public static void main(String args[])
    {
        if(System.out.append("Hello, World!\n").equals(null))
        {

        }
    }
}
Output
kodingwindow@kw:~$ javac KW.java
kodingwindow@kw:~$ java KW
Hello, World!
kodingwindow@kw:~$
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