类与对象小作业

运行结果为：案例（1）publicclassRefDemo1{publicstaticvoidmain(String[]args){Stringstr1=”hello”;Stringstr2=”hello”;Stringstr3=newString(“hello”);Stringstr4=newString(“hello”);System.out.println(str1==str2);System.out.println(str3==str4);System.out.println(str2==str3);System.out.println(str1.equals(s2));System.out.println(str1.equals(s3));System.out.println(str2.equals(s3));System.out.println(str3.equals(s4));}}运行结果为：案例（2）classDemo{Stringtemp=hello;}publicclassRefDemo2{publicstaticvoidmain(Stringargs[]){Demod1=newDemo();d1.temp=world;System.out.println(fun()方法调用之前：+d1.temp);fun(d1);System.out.println(fun()方法调用之后：+d1.temp);}publicstaticvoidfun(Demod2){d2.temp=MMM;}}案例（3）classDemo{inttemp=30;}publicclassRefDemo3{publicstaticvoidmain(Stringargs[]){Demod1=newDemo();d1.temp=50;System.out.println(fun()方法调用之前：+d1.temp);fun(d1);System.out.println(fun()方法调用之后：+d1.temp);}publicstaticvoidfun(Demod2){d2.temp=1000;}}运行结果为：案例（4）classArrayPass{publicintsearchMin(double[]number){intindexOfMin=0;for(inti=1;inumber.length;i++){if(number[i]number[indexOfMin])indexOfMin=i;}returnindexOfMin;}}publicclassArrayPassTest{publicstaticvoidmain(String[]args){ArrayPassa=newArrayPass();double[]arrayOne={3.3,2.4,5,9.0,12,9.0};intminOne=a.searchMin(arrayOne);System.out.println(数组arrayOne的最小值是：+arrayOne[minOne]);}}运行结果为：案例（5）publicclassPassArrayextendsJApplet{JTextAreaoutputArea;Stringoutput;publicvoidinit(){outputArea=newJTextArea();Containerc=getContentPane();c.add(outputArea);inta[]={1,2,3,4,5};output=数组的原始值为：\n;for(inti=0;ia.length;i++)output+=+a[i];modifyArray(a);output+=修改后数组的值为：\n;for(inti=0;ia.length;i++)output+=+a[i];output+=值传递下a[3]元素的值为:+a[3];modifyElement(a[3]);output+=元素修改后a[3]=+a[3];outputArea.setText(output);}publicvoidmodifyArray(intb[]){for(intj=0;jb.length;j++)b[j]*=2;}publicvoidmodifyElement(inte){e*=2;}}运行结果为：