passtest.java

矩阵乘法的计算程序

/**
 * This class can take a variable number of parameters on the command
 * line. Program execution begins with the main() method. The class
 * constructor is not invoked unless an object of type 'Class1'
 * created in the main() method.
 */
public class PassTest
{
	float ptValue;
	public static void main (String[] args)
	{
		int val;
		PassTest pt=new PassTest() ;
		val=11;
		System.out.println(val);
		pt.ChangeInt(val);
		System.out.println("Int Value after Change is:"+val);
		pt.ptValue =101f;
		System.out.println("Original ptValue is:"+pt.ptValue );
		pt.ChangeObjValue(pt);
    	System.out.println("ptValue after Change is:"+pt.ptValue );
	}
		private void ChangeInt(int value){
         value=55;
										}
		public void ChangeObjValue(PassTest ref){
		 ref.ptValue=99f;
												}
													
													   
											   
										   
											
	
}