When a thread enters an synchronized method of an object, can other threads enter other methods of this object?

In two different situations

1): Non-Synchronized method to enter this object

Answer: You can

2): The synchronization method to enter this object

Answer: No, you can't.

The first case of the original code

/**
 * * *
/package thread;


/**
 * @author Administrator
 */public
class TestClass {
	/**
	 * * @param
	 args
	* * public static void Main (string[] args) {
		TestClass TC = new TestClass ();
		Thread1 T1 = tc.new Thread1 (TC);
		T1.start ();
		Thread2 t2 = tc.new Thread2 (TC);
		T2.start ();
		
	}

	Class Thread1 extends thread{
		testclass tc = NULL;
		Public Thread1 (TestClass tc) {
			THIS.TC = TC;
		}
		@Override public
		Void Run () {
			tc.method1 ();
		}
	}
	Class Thread2 extends thread{
		testclass tc = NULL;
		Public Thread2 (TestClass tc) {
			THIS.TC = TC;
		}
		@Override public
		Void Run () {
			//TODO auto-generated method Stub
			tc.method2 ();
		}
	
	Public synchronized void Method1 () {
		System.out.println ("method1");
		try {
			thread.sleep (1000*10);
		} catch (Interruptedexception e) {
			e.printstacktrace ();
		}
	} Public  void Method2 () {
		System.out.println ("Method2");
	}

The second case is the original code

/**
 * * *
/package thread;


/**
 * @author Administrator
 */public
class TestClass {
	/**
	 * * @param
	 args
	* * public static void Main (string[] args) {
		TestClass TC = new TestClass ();
		Thread1 T1 = tc.new Thread1 (TC);
		T1.start ();
		Thread2 t2 = tc.new Thread2 (TC);
		T2.start ();
		
	}

	Class Thread1 extends thread{
		testclass tc = NULL;
		Public Thread1 (TestClass tc) {
			THIS.TC = TC;
		}
		@Override public
		Void Run () {
			tc.method1 ();
		}
	}
	Class Thread2 extends thread{
		testclass tc = NULL;
		Public Thread2 (TestClass tc) {
			THIS.TC = TC;
		}
		@Override public
		Void Run () {
			//TODO auto-generated method Stub
			tc.method2 ();
		}
	
	Public synchronized void Method1 () {
		System.out.println ("method1");
		try {
			thread.sleep (1000*10);
		} catch (Interruptedexception e) {
			e.printstacktrace ();
		}
	} Public synchronized void Method2 () {
		System.out.println ("Method2");
	}