diff --git a/bind/testdata/java.go b/bind/testdata/java.go
index 997e3ee..6e06b4e 100644
--- a/bind/testdata/java.go
+++ b/bind/testdata/java.go
@@ -11,6 +11,7 @@ import (
 
 type (
 	F lang.Float
+	L lang.Long
 	O lang.Object
 	R lang.Runnable
 	S Character.Subset // Inner class
diff --git a/bind/testdata/java.go.golden b/bind/testdata/java.go.golden
index b8b61d7..5e5baa2 100644
--- a/bind/testdata/java.go.golden
+++ b/bind/testdata/java.go.golden
@@ -32,11 +32,35 @@ import "Java"
 const _ = Java.Dummy
 
 type Float Java.Java_lang_Float
+type Long Java.Java_lang_Long
 type Object Java.Java_lang_Object
 type Runnable Java.Java_lang_Runnable
 type Character Java.Java_lang_Character
 // File is generated by gobind. Do not edit.
 
+package Long
+
+import "Java"
+
+const _ = Java.Dummy
+
+const (
+	MIN_VALUE = -9223372036854775808
+	MAX_VALUE = 9223372036854775807
+	SIZE = 64
+	BYTES = 8
+)
+
+var (
+	// Cast takes a proxy for a Java object and converts it to a java.lang.Long proxy.
+	// Cast panics if the argument is not a proxy or if the underlying object does
+	// not extend or implement java.lang.Long.
+	Cast func(v interface{}) Java.Java_lang_Long
+	
+)
+
+// File is generated by gobind. Do not edit.
+
 package Object
 
 import "Java"
@@ -176,6 +200,10 @@ type Java_lang_Float interface {
 	ToString() string
 }
 
+type Java_lang_Long interface {
+	ToString() string
+}
+
 type Java_lang_Object interface {
 	ToString() string
 }
@@ -209,6 +237,7 @@ import (
 )
 
 import "Java/java/lang/Float"
+import "Java/java/lang/Long"
 import "Java/java/lang/Object"
 import "Java/java/lang/Runnable"
 import "Java/java/lang/Character"
@@ -230,6 +259,7 @@ const _ = Java.Dummy
 func initClasses() {
 	C.init_proxies()
 	init_java_lang_Float()
+	init_java_lang_Long()
 	init_java_lang_Object()
 	init_java_lang_Runnable()
 	init_java_lang_Character()
@@ -277,6 +307,47 @@ func (p *proxy_class_java_lang_Float) ToString() string {
 	return _res
 }
 
+var class_java_lang_Long C.jclass
+
+func init_java_lang_Long() {
+	cls := C.CString("java/lang/Long")
+	clazz := C.go_seq_find_class(cls)
+	C.free(unsafe.Pointer(cls))
+	if clazz == nil {
+		return
+	}
+	class_java_lang_Long = clazz
+	Long.Cast = func(v interface{}) Java.Java_lang_Long {
+		t := reflect.TypeOf((*proxy_class_java_lang_Long)(nil))
+		cv := reflect.ValueOf(v).Convert(t).Interface().(*proxy_class_java_lang_Long)
+		ref := C.jint(_seq.ToRefNum(cv))
+		if C.go_seq_isinstanceof(ref, class_java_lang_Long) != 1 {
+			panic(fmt.Errorf("%T is not an instance of %s", v, "java.lang.Long"))
+		}
+		return cv
+	}
+}
+
+type proxy_class_java_lang_Long _seq.Ref
+
+func (p *proxy_class_java_lang_Long) Bind_proxy_refnum__() int32 { return (*_seq.Ref)(p).Bind_IncNum() }
+
+func (p *proxy_class_java_lang_Long) ToString() string {
+	res := C.cproxy_java_lang_Long_toString(C.jint(p.Bind_proxy_refnum__()))
+	_res := decodeString(res.res)
+	var _exc error
+	_exc_ref := _seq.FromRefNum(int32(res.exc))
+	if _exc_ref != nil {
+		if res.exc < 0 { // go object
+			_exc = _exc_ref.Get().(error)
+		} else { // foreign object
+			_exc = (*proxy_error)(_exc_ref)
+		}
+	}
+	if (_exc != nil) { panic(_exc) }
+	return _res
+}
+
 var class_java_lang_Object C.jclass
 
 func init_java_lang_Object() {
@@ -467,6 +538,25 @@ func (p *proxyjava_F) ToString() string {
 	return _res
 }
 
+//export proxyjava_L_ToString
+func proxyjava_L_ToString(refnum C.int32_t) C.nstring {
+	ref := _seq.FromRefNum(int32(refnum))
+	v := ref.Get().(java.L)
+	res_0 := v.ToString()
+	_res_0 := encodeString(res_0)
+	return _res_0
+}
+
+type proxyjava_L _seq.Ref
+
+func (p *proxyjava_L) Bind_proxy_refnum__() int32 { return (*_seq.Ref)(p).Bind_IncNum() }
+
+func (p *proxyjava_L) ToString() string {
+	res := C.cproxyjava_L_ToString(C.int32_t(p.Bind_proxy_refnum__()))
+	_res := decodeString(res)
+	return _res
+}
+
 //export proxyjava_O_ToString
 func proxyjava_O_ToString(refnum C.int32_t) C.nstring {
 	ref := _seq.FromRefNum(int32(refnum))
diff --git a/bind/testdata/java.java.c.golden b/bind/testdata/java.java.c.golden
index b1fbd2b..980a4dd 100644
--- a/bind/testdata/java.java.c.golden
+++ b/bind/testdata/java.java.c.golden
@@ -6,6 +6,8 @@
 
 static jclass class_java_lang_Float;
 static jmethodID m_java_lang_Float_toString;
+static jclass class_java_lang_Long;
+static jmethodID m_java_lang_Long_toString;
 static jclass class_java_lang_Object;
 static jmethodID m_java_lang_Object_toString;
 static jclass class_java_lang_Runnable;
@@ -15,11 +17,14 @@ static jclass class_java_lang_Character_Subset;
 static jmethodID m_java_lang_Character_Subset_toString;
 
 void init_proxies() {
-	JNIEnv *env = go_seq_push_local_frame(5);
+	JNIEnv *env = go_seq_push_local_frame(6);
 	jclass clazz;
 	clazz = (*env)->FindClass(env, "java/lang/Float");
 	class_java_lang_Float = (*env)->NewGlobalRef(env, clazz);
 	m_java_lang_Float_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
+	clazz = (*env)->FindClass(env, "java/lang/Long");
+	class_java_lang_Long = (*env)->NewGlobalRef(env, clazz);
+	m_java_lang_Long_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
 	clazz = (*env)->FindClass(env, "java/lang/Object");
 	class_java_lang_Object = (*env)->NewGlobalRef(env, clazz);
 	m_java_lang_Object_toString = go_seq_get_method_id(clazz, "toString", "()Ljava/lang/String;");
@@ -50,6 +55,22 @@ ret_nstring cproxy_java_lang_Float_toString(jint this) {
 	return __res;
 }
 
+ret_nstring cproxy_java_lang_Long_toString(jint this) {
+	JNIEnv *env = go_seq_push_local_frame(1);
+	// Must be a Java object
+	jobject _this = go_seq_from_refnum(env, this, NULL, NULL);
+	jstring res = (*env)->CallObjectMethod(env, _this, m_java_lang_Long_toString);
+	jobject _exc = go_seq_get_exception(env);
+	int32_t _exc_ref = go_seq_to_refnum(env, _exc);
+	if (_exc != NULL) {
+		res = NULL;
+	}
+	nstring _res = go_seq_from_java_string(env, res);
+	go_seq_pop_local_frame(env);
+	ret_nstring __res = {_res, _exc_ref};
+	return __res;
+}
+
 ret_nstring cproxy_java_lang_Object_toString(jint this) {
 	JNIEnv *env = go_seq_push_local_frame(1);
 	// Must be a Java object
@@ -112,6 +133,9 @@ ret_nstring cproxy_java_lang_Character_Subset_toString(jint this) {
 jclass proxy_class_java_F;
 jmethodID proxy_class_java_F_cons;
 static jmethodID mid_F_ToString;
+jclass proxy_class_java_L;
+jmethodID proxy_class_java_L_cons;
+static jmethodID mid_L_ToString;
 jclass proxy_class_java_O;
 jmethodID proxy_class_java_O_cons;
 static jmethodID mid_O_ToString;
@@ -130,6 +154,12 @@ Java_java_Java__1init(JNIEnv *env, jclass _unused) {
     clazz = (*env)->FindClass(env, "java/F");
     mid_F_ToString = (*env)->GetMethodID(env, clazz, "toString", "()Ljava/lang/String;");
     
+    clazz = (*env)->FindClass(env, "java/Java$proxyL");
+    proxy_class_java_L = (*env)->NewGlobalRef(env, clazz);
+    proxy_class_java_L_cons = (*env)->GetMethodID(env, clazz, "<init>", "(Lgo/Seq$Ref;)V");
+    clazz = (*env)->FindClass(env, "java/L");
+    mid_L_ToString = (*env)->GetMethodID(env, clazz, "toString", "()Ljava/lang/String;");
+    
     clazz = (*env)->FindClass(env, "java/Java$proxyO");
     proxy_class_java_O = (*env)->NewGlobalRef(env, clazz);
     proxy_class_java_O_cons = (*env)->GetMethodID(env, clazz, "<init>", "(Lgo/Seq$Ref;)V");
@@ -166,6 +196,23 @@ nstring cproxyjava_F_ToString(int32_t refnum) {
     return _res;
 }
 
+JNIEXPORT jstring JNICALL
+Java_java_Java_00024proxyL_toString(JNIEnv* env, jobject __this__) {
+    int32_t o = go_seq_to_refnum_go(env, __this__);
+    nstring r0 = proxyjava_L_ToString(o);
+    jstring _r0 = go_seq_to_java_string(env, r0);
+    return _r0;
+}
+
+nstring cproxyjava_L_ToString(int32_t refnum) {
+    JNIEnv *env = go_seq_push_local_frame(0);
+    jobject o = go_seq_from_refnum(env, refnum, proxy_class_java_L, proxy_class_java_L_cons);
+    jstring res = (*env)->CallObjectMethod(env, o, mid_L_ToString);
+    nstring _res = go_seq_from_java_string(env, res);
+    go_seq_pop_local_frame(env);
+    return _res;
+}
+
 JNIEXPORT jstring JNICALL
 Java_java_Java_00024proxyO_toString(JNIEnv* env, jobject __this__) {
     int32_t o = go_seq_to_refnum_go(env, __this__);
diff --git a/bind/testdata/java.java.golden b/bind/testdata/java.java.golden
index dd5fd21..22a2ec5 100644
--- a/bind/testdata/java.java.golden
+++ b/bind/testdata/java.java.golden
@@ -11,6 +11,19 @@ public interface F extends R {
     
 }
 
+// Java class java.L is a proxy for talking to a Go program.
+//   gobind -lang=java java
+//
+// File is generated by gobind. Do not edit.
+package java;
+
+import go.Seq;
+
+public interface L extends R {
+    public String toString();
+    
+}
+
 // Java class java.O is a proxy for talking to a Go program.
 //   gobind -lang=java java
 //
@@ -83,6 +96,19 @@ public abstract class Java {
         
         public native String toString();
     }
+    private static final class proxyL implements Seq.Proxy, L {
+        private final Seq.Ref ref;
+        
+        @Override public final int incRefnum() {
+              int refnum = ref.refnum;
+              Seq.incGoRef(refnum);
+              return refnum;
+        }
+        
+        proxyL(Seq.Ref ref) { this.ref = ref; }
+        
+        public native String toString();
+    }
     private static final class proxyO implements Seq.Proxy, O {
         private final Seq.Ref ref;
         
diff --git a/bind/testdata/java.java.h.golden b/bind/testdata/java.java.h.golden
index 0cc218e..3d9671a 100644
--- a/bind/testdata/java.java.h.golden
+++ b/bind/testdata/java.java.h.golden
@@ -47,6 +47,7 @@ typedef struct ret_nbyteslice {
 } ret_nbyteslice;
 
 extern ret_nstring cproxy_java_lang_Float_toString(jint this);
+extern ret_nstring cproxy_java_lang_Long_toString(jint this);
 extern ret_nstring cproxy_java_lang_Object_toString(jint this);
 extern ret_nstring cproxy_java_lang_Character_toString(jint this);
 extern ret_nstring cproxy_java_lang_Character_Subset_toString(jint this);
@@ -65,6 +66,11 @@ extern jmethodID proxy_class_java_F_cons;
 
 nstring cproxyjava_F_ToString(int32_t refnum);
 
+extern jclass proxy_class_java_L;
+extern jmethodID proxy_class_java_L_cons;
+
+nstring cproxyjava_L_ToString(int32_t refnum);
+
 extern jclass proxy_class_java_O;
 extern jmethodID proxy_class_java_O_cons;
 
diff --git a/internal/importers/java/java.go b/internal/importers/java/java.go
index 8a4cdef..8cbc6ae 100644
--- a/internal/importers/java/java.go
+++ b/internal/importers/java/java.go
@@ -1103,7 +1103,7 @@ func (j *Importer) fillAllMethods(cls *Class) {
 }
 
 func (j *Importer) parseJavaValue(v string) (string, bool) {
-	v = strings.TrimRight(v, "df")
+	v = strings.TrimRight(v, "ldf")
 	switch v {
 	case "", "NaN", "Infinity", "-Infinity":
 		return "", false