diff --git a/lib/class-factory.js b/lib/class-factory.js
index f3b76f6..1d71bec 100644
--- a/lib/class-factory.js
+++ b/lib/class-factory.js
@@ -1978,6 +1978,22 @@ Object.defineProperties(Field.prototype, {
     get () {
       return this._p[2];
     }
+  },
+  toString: {
+    enumerable: true,
+    value () {
+      const inlineString = `Java.Field{holder: ${this.holder}, fieldType: ${this.fieldType}, fieldReturnType: ${this.fieldReturnType}, value: ${this.value}}`;
+      if (inlineString.length < 200) {
+        return inlineString;
+      }
+      const multilineString = `Java.Field{
+\tholder: ${this.holder},
+\tfieldType: ${this.fieldType},
+\tfieldReturnType: ${this.fieldReturnType},
+\tvalue: ${this.value},
+}`;
+      return multilineString.split('\n').map(l => l.length > 200 ? l.slice(0, l.indexOf(' ') + 1) + '...,' : l).join('\n');
+    },
   }
 });
 
diff --git a/lib/types.js b/lib/types.js
index 565b146..6a0f977 100644
--- a/lib/types.js
+++ b/lib/types.js
@@ -51,6 +51,9 @@ const primitiveTypes = {
     },
     write (address, value) {
       address.writeU8(value);
+    },
+    toString () {
+      return this.name;
     }
   },
   byte: {
@@ -69,6 +72,9 @@ const primitiveTypes = {
     },
     write (address, value) {
       address.writeS8(value);
+    },
+    toString () {
+      return this.name;
     }
   },
   char: {
@@ -96,6 +102,9 @@ const primitiveTypes = {
     },
     write (address, value) {
       address.writeU16(value);
+    },
+    toString () {
+      return this.name;
     }
   },
   short: {
@@ -114,6 +123,9 @@ const primitiveTypes = {
     },
     write (address, value) {
       address.writeS16(value);
+    },
+    toString () {
+      return this.name;
     }
   },
   int: {
@@ -132,6 +144,9 @@ const primitiveTypes = {
     },
     write (address, value) {
       address.writeS32(value);
+    },
+    toString () {
+      return this.name;
     }
   },
   long: {
@@ -150,6 +165,9 @@ const primitiveTypes = {
     },
     write (address, value) {
       address.writeS64(value);
+    },
+    toString () {
+      return this.name;
     }
   },
   float: {
@@ -168,6 +186,9 @@ const primitiveTypes = {
     },
     write (address, value) {
       address.writeFloat(value);
+    },
+    toString () {
+      return this.name;
     }
   },
   double: {
@@ -186,6 +207,9 @@ const primitiveTypes = {
     },
     write (address, value) {
       address.writeDouble(value);
+    },
+    toString () {
+      return this.name;
     }
   },
   void: {
@@ -202,6 +226,9 @@ const primitiveTypes = {
     },
     toJni () {
       return NULL;
+    },
+    toString () {
+      return this.name;
     }
   }
 };
@@ -345,6 +372,9 @@ function getAnyObjectType (typeName, unbox, factory) {
       }
 
       return o.$h;
+    },
+    toString () {
+      return this.name;
     }
   };
 }