FULL PRODUCT VERSION :
java version "9.0.1"
Java(TM) SE Runtime Environment (build 9.0.1+11)
Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Linux SELAB-SERVER2 4.13.0-26-generic #29~16.04.2-Ubuntu SMP Tue Jan 9 22:00:44 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

A DESCRIPTION OF THE PROBLEM :
It can work in JDK8, but fail in JDK9.

REGRESSION.  Last worked in version 8u151

ADDITIONAL REGRESSION INFORMATION: 
java version "1.8.0_151"
Java(TM) SE Runtime Environment (build 1.8.0_151-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.151-b12, mixed mode)


ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.lang.AssertionError: expected:<-1.0> but was:<0.0>
	at org.junit.Assert.fail(Assert.java:88)
	at org.junit.Assert.failNotEquals(Assert.java:834)
	at org.junit.Assert.assertEquals(Assert.java:118)
	at org.junit.Assert.assertEquals(Assert.java:144)
	at edu.utd.cs.testjdk.test.testFact(test.java:43)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:538)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:760)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:460)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:206)



REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package edu.utd.cs.testjdk;

import static org.junit.Assert.assertEquals;

import java.io.Serializable;

import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.junit.Test;

public class test  {

	@Test
	public void testFact() {
		Subject loc = new Subject("name", "-1.0,2.5");
		assertEquals(new Double(-1.0), loc.lat);
	}	

}

class Subject implements Cloneable, Serializable{
	private int n;
    public Double lat;

    public Double lng;
    public final String place;
    public final String name;
    public Double heading;
    public Integer edgeId;
    
    private static final String _doublePattern = "-{0,1}\\d+(\\.\\d+){0,1}";
    private static final Pattern _latLonPattern = Pattern.compile("[^[\\d&&[-|+|.]]]*(" + _doublePattern
            + ")(\\s*,\\s*|\\s+)(" + _doublePattern + ")\\D*");
    private static final Pattern _headingPattern = Pattern.compile("\\D*heading=("
            + _doublePattern + ")\\D*");

    private static final Pattern _edgeIdPattern = Pattern.compile("\\D*edgeId=(\\d+)\\D*");

	public Subject(String name, String place) {
        this.name = name;
        this.place = place;

        if (place == null) {
            return;
        }
        
        Matcher matcher = _latLonPattern.matcher(place);
        if (matcher.find()) {
            this.lat = Double.parseDouble(matcher.group(1));
            this.lng = Double.parseDouble(matcher.group(4));
        }
        
        matcher = _headingPattern.matcher(place);
        if (matcher.find()) {
            this.heading = Double.parseDouble(matcher.group(1));
        }
        
        matcher = _edgeIdPattern.matcher(place);
        if (matcher.find()) {
            this.edgeId = Integer.parseInt(matcher.group(1));
        }
	

	}
}
---------- END SOURCE ----------

SUPPORT :
YES