FCBL_Sample.java

package ex;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.util.Locale;

import javax.swing.SwingUtilities;

@SuppressWarnings("all")
public final class FCBL_Sample {
    public int foo; // no warning (scope)
    private int moo; // warning
    private int boo; // warning
    int hoo; // no warning (scope)
    private int fp; // no warning (read in method test2)
    private int multiMethodFP; // no warning (used in a couple methods)
    private String test; // warning
    private String testNestedIfs;// no warning (in one branch of the if, this is
                                 // read first)
    private int x = 1; // warning
    private int y = 2; // no warning (read first in method1)
    private boolean ret; // warning (shielded in foo)
    @FooAnnotation
    private String notUsed; // warning
    @FooAnnotation
    private String used; // no warning (annotation+stored)

    private String fooS = "Foo"; // warning
    private String[] fooSS = { fooS }; // no warning (read in testInArray)

    private boolean checkMethodCall;

    public FCBL_Sample() {
        foo = 0;
        moo = 1;
        boo = 2;
        hoo = 3;
        fp = 4;
        used = "Hello";
        ret = false;

        // to mask standard URF_UNREAD_FIELD
        System.out.println(foo + hoo + used + moo + boo + ret);
    }

    public void method1() {
        x = 50;
        System.out.println(x);
        System.out.println(y);
    }

    public void test1() {
        foo = 2;
        moo = 3;
        boo = 4;
        fp = 5;
    }

    public void testInArray() {
        for (String s : fooSS) {
        }
    }

    public void test2() {
        boo = fp;
    }

    public void test3(String in) {
        boolean found = false;
        if ("boo".equals(in)) {
            test = "boo";
        } else if ("hoo".equals(in)) {
            test = "hoo";
        } else if ("moo".equals(in)) {
            if ("loo".equals(in) && !found) {
                found = true;
            }
        }

        test = "WooWoo".toLowerCase(Locale.ENGLISH); // hides the PME warning
                                                     // and the standard
                                                     // DM_CONVERT_CASE
        if (in.length() > 1) {
            test = "woowoo";
            System.out.println(test);
        }
    }

    public void testNestedIfs(String in) {
        boolean found = false;
        if ("boo".equals(in)) {
            testNestedIfs = "boo";
        } else if ("hoo".equals(in)) {
            testNestedIfs = "hoo";
        } else if ("moo".equals(in)) {
            if ("loo".equals(in) && !found) {
                System.out.println(in + testNestedIfs);
            }
        }

        testNestedIfs = "WooWoo".toLowerCase(Locale.ENGLISH); // hides the PME
                                                              // warning and the
                                                              // standard
                                                              // DM_CONVERT_CASE
        if (in.length() > 1) {
            testNestedIfs = "woowoo";
        }
    }

    public void mm1FP(int i) {
        multiMethodFP = i;
        mm2FP(3);

        if (multiMethodFP == i) {
            System.out.println("FP");
        }
    }

    public void mm2FP(int i) {
        multiMethodFP = i;
    }

    public void baseMethod() {
        checkMethodCall = false;
        setCheckMethod();

        if (checkMethodCall) {
            System.out.println("It changed");
        }
    }

    public void setCheckMethod() {
        if (Math.random() < 0.05) {
            checkMethodCall = true;
        }
    }

    static class Foo {
        boolean ret;

        public boolean testFPAnon() {
            ret = false;

            SwingUtilities.invokeLater(new Runnable() {
                @Override
                public void run() {
                    ret = false;
                }
            });

            return ret;
        }
    }

    @Retention(RetentionPolicy.RUNTIME)
    @Target(ElementType.FIELD)
    @interface FooAnnotation {

    }

    static class FieldNameCollisionFP {
        OutputStream out;

        public FieldNameCollisionFP(OutputStream out) {
            this.out = out;
        }

        public void collide() throws IOException {
            System.out.println("See out!");
            out.close();
        }
    }
}