JavaCopExplosion.java

import checkers.nullness.quals.*;

import com.sun.tools.javac.util.List;
@checkers.quals.DefaultQualifier("Nullable")
class Explosion {
    public static class ExplosiveException extends Exception{

    }

    @NonNull Integer m_nni = 1;
    final String m_astring;

    Explosion(){
        //m_nni = 1;\
        m_astring = "hi";
        try{
            throw new RuntimeException();
        }catch(Exception e){
            System.out.println(m_astring.length());
        }
        return;
    }

    static void main(String @NonNull [] args){
        @NonNull String s = "Dan";
        String s2;
        s2 = null;
        if (s2 != null || s != null)
            //:: (assignment.type.incompatible)
            s = s2;
        else
            s = new String("Levitan");
        s2 = args[0];
        //:: (dereference.of.nullable)
        System.out.println("Possibly cause null pointer with this: " + s2.length());
        if (s2 == null){
            ;//do nothing
        }else{
            System.out.println("Can't cause null pointer here: " + s2.length());
            s = s2;
        }
        if (s==null?s2!=null:s2!=null){
            s = s2;
        }
        System.out.println("Hello " + s);
        System.out.println("Hello " + s.length());
        f();
    }
    static private int f(){
        while(true){
            try{
                throw new ExplosiveException();
            }finally{
                //break;
                return 1;
                //throw new RuntimeException();
            }
        }

    }
    static public int foo(){
        final int v;
        int x;
        Integer z;
        Integer y;
        @NonNull Integer nnz = 3;
        z = new Integer(5);
        try{
            x = 3;
            x = 5;
            //y = z;
            nnz = z;
            z = null;
            //:: (assignment.type.incompatible)
            nnz = z;

            while (z == null){
                break;
            }
            nnz = z;
            while (z == null){
                ; //do nothing
            }
            nnz = z;
            //v = 1;
            return 1;
            //v = 2;
            //throw new RuntimeException ();
        }catch(RuntimeException e){
            e.printStackTrace();
            //e = null;
            //v = 1;
        }catch(Exception e){
            //nnz = z;
            //v = 2;
        }finally{
            nnz = z;     // Java warning: z might not have been initialized
            //v = 1 + x;
        }
        return 1;
        //return v + x;
    }

    private void bar(List<@NonNull String> ss, String b, String c){
        @NonNull String a;
        //:: (dereference.of.nullable)
        for(@NonNull String s : ss){
            a = s;
        }
        if (b==null || b.length() == 0){
            System.out.println("hey");
        }
        if (b != null){
            //:: (dereference.of.nullable)
            for (; b.length() > 0 ; b = null){
                System.out.println(b.length());
            }
        }
    }

}