java平日练习题

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Javaᭆ⚪1⚪ᑨ⚪⚪Javaᑴṹ஺⚪2⚪ᑨ⚪⚪Java☢ᔣ!"Ḅ$%஺⚪3⚪&'⚪⚪Javaᐹᨵ*+ᱯ-.⚪4⚪&'⚪⚪/012!Java3456ឋḄᳮ9஺⚪1⚪&'⚪⚪ᑖ᪆<=Java>?@ABḄCDEFᢣHJavaᐹᨵIJKឋḄLM.⚪2⚪&'⚪⚪JavaḄCDEᒹO*PQRS.⚪3⚪ᑨ⚪⚪JavaT⁚ṹᦻW>ᐹX34YᐵḄ஺ᑖ᪆>[\JavaT⁚ṹᦻW]ᯠ_`aᑴᦻWFbc>34dᐵḄFIefghJ஺⚪4⚪ᑨ⚪⚪JavaḄi᛻kCDi᛻lmᙠo•4qᘤs஺⚪1⚪⌱u⚪

1⚪QᦻWvwfirstḄJavaxᦻWFyᑮḄ{ᦻWw()Aஹfirst.JavaBஹfirst.classCஹfirst.cDஹsᙳ!⚪2⚪ᑨ⚪⚪yḄ{ᦻWIeᙠfgqs_CD஺⚪3⚪ᑨ⚪⚪!Java{ᦻWḄ9kCDᵫJavaqᡂḄ஺⚪4⚪&'⚪⚪ᑏkCDQJavaEᒹO*+.⚪5⚪&'⚪⚪ᙠJDKi᛻FkCDJavaḄ.⚪1⚪&'⚪⚪Javaᑖ*ᜧ{.cᨵ*+.⚪2⚪ᑨ⚪⚪QJavaᵨIeᨵQ{Fᐸᨵ¡¢£ᨵQ{ᨵmain()¤¥஺⚪3⚪ᑨ⚪⚪AppletkApplicationḄCD¤¦YoF§main¤¥¨©᡻DḄ஺⚪4⚪⌱u⚪⚪Applet«ᑡ*Q⌱⚗CDAஹIEBஹappletviewerCஹDDஹNetscape⚪5

2⚪ᑨ⚪⚪QJavaᵨ£«ᨵQ®ᐳ{஺2
ᦪ±{>⊤³¦⚪1⚪⌱u⚪⚪ᑡ᪗µ¶*Qᔠ¥Ḅ¸¹஺Aஹa=bBஹ_He11oCஹ2ndDஹChongqing⚪2⚪⌱u⚪⚪ᑡ*Q᪗µ¶JavaᐵºT¸¹஺AஹnewBஹclassCஹintDconst⚪3⚪ᑨ⚪⚪»¼⌕ᵨa¾¿ḄIÀឋFÁ@ᙠÂÃᐸÄᶍ஺⚪1⚪⌱u⚪⚪᝞ÇÈÉᨵÊËdoubledl,d2=5.0ᑣᑡ0¥ÍÎḄAஹÊËdl,d2ᙳÏ©ᓄw5.0BஹÊËdlÑᨵÏ©ᓄFd2Ï©ᓄw5.0CஹÊËdl,d2ᙳÒÏ©ᓄDஹÊËd2ÑᨵÏ©ᓄFdlÏ©ᓄw5.0⚪2⚪ᑨ⚪⚪ᡠᨵḄÊËᙠÔᵨÕ§lmDÏ©ᓄ஺⚪3⚪ᑨ⚪⚪finalinta=123Öa=12;⚪4⚪&'⚪

3⚪ÊËḄᵨ×ᑖ.⚪1⚪⌱u⚪⚪ᑁÙᦪ±{byteḄÚÛÝAஹ065,535Bஹ(-128)-127Cஹ(-32,768)-32,767Dஹ(-256)255⚪2⚪⌱u⚪⚪ᑡ*+«ÞEḄßAஹinti=32;Bஹfloatf=45.0;Cஹdoubled=45.0;Dஹchara=9c*;⚪3⚪⌱u⚪⚪ᑡß*Q┯áḄAஹchara=9c9;Bஹchara=,\b,;Cஹchara="a";Dஹchara=?\103,⚪4⚪ᑨ⚪⚪Javaᦪ±{Ḅâã>ᐹXÔᵨḄqᘤYᐵ஺⚪5:⚪&'⚪⚪JavaḄäå{ᨵ*+.>ᐸcY<ᨵ*+.⚪1⚪⌱u⚪

4⚪᝞ÇÈÉᨵdouble,floaty,intm,ᑣ⊤³¦x*y-mḄ{wAஹdoubleBஹfloatCஹintDஹshort⚪2⚪⌱u⚪⚪᝞Çᨵintk=5,m;floatx=1.2;æll%çm=(int)x*kḄÛwAஹ5Bஹ6Cஹ5.0Dஹ6.0⚪3⚪ᑨ⚪⚪{wintḄ᦮ᦪéᣚw{wshortḄ᦮ᦪÂFIeÔᵨëì{éᣚ஺⚪4:⚪&'⚪⚪Javaᦪ±{éᣚᨵ*í¦.ᑖ᝞îD.⚪⌱u⚪⚪ᵨaïðQñò⊤³¦ḄÛᔲoÂwtrueḄñòô¶Aஹ&BஹIICஹ&&DஹI⚪2⚪⌱u⚪⚪ᑡö᡻DHḄ÷Çintxl=9,x2=6,tl;11=x1>x2?x1:x2;Aஹ6Bஹ9C,11Dஹ3⚪3⚪⌱u⚪⚪!aQøùḄÍ᦮ᦪn,ÚHᐸᙠᓝùsḄᦪTkḄ⊤³¦Aஹk=n/10%10Bஹk=(n-n/100*100)%10Cஹk=n%10Dஹk=n/10

5⚪4⚪⌱u⚪⚪᡻Deöinia=5,b;b=++a*3bḄÛwAஹ17Bஹ18Cஹ16Dஹ15⚪5⚪⌱u⚪⚪᝞Çinta=3,b=2,ᑣ᡻Da*=b+8aḄÛwAஹ20Bஹ14Cஹ30Dஹ16⚪6⚪⌱u⚪⚪᝞Çx=3,y=5,ᑣ⊤³¦xlyḄÛwAஹ15Bஹ8Cஹ1Dஹ7⚪7⚪⌱u⚪⚪ûᨵÈÉinta=2;ᑣ᡻Dßa+=a-=a*a;FaḄÛ¸¹஺Aஹ0Bஹ4Cஹ8Dஹ-4⚪1⚪⌱u⚪⚪ûᡠᵨÊ˧üÍÎÈÉFe⌱⚗Fý¥Ḅ⊤³¦Aஹa!=4llb==lBஹ'a'%3Cஹ'a'=1/2Dஹ'A'+32⚪2⚪⌱u⚪⚪e⌱⚗Fᔠ¥ḄþÛ߸¹஺Aஹa==l;Bஹ++i;Cஹa=a+1=5;D>y=inti
;⚪3⚪ᑨ⚪

6⚪⊤Ḅ⌕ᢥᐜᑮḄ஺⚪4:⚪⚪⚪!"#⊤$%3&Java'()᪀⚪1⚪ᑨ⚪⚪᝞,'(-.ᑣᑖ123ḕᶍ஺⚪2⚪⚪⚪⊤'(6⊤78Ḅ9:#!"$⚪I⚪ᑨ⚪⚪ᙠ<=>?Ḅ'(ᙽABCDEFG஺⚪2⚪ᑨ⚪⚪᝞,HI᝞J{(inti=1;System.out.println(i);)System.out.println(i);)ᑣJ☢L(M#N>ḄAஹDEOPQRBஹEN>CஹEN>QRDஹST),-1⚪3⚪ᑨ⚪

7⚪Uᔠ'(WᯠᵫZᩩ'(᪀ᡂ]^_E`2a-<ᩩ'(]#<=᦮c஺⚪1⚪ᑨ⚪⚪Jᑡ'(ᑡ᡻f]XḄg#ointa=3,b=4,x=5;if(++a

8Aஹ10Bஹ15C^13Dஹ21⚪4⚪ᑨ⚪⚪if(x>9){System.out.println(iCTest1");}elseif(x>4){System.out.println(fc4Test2");)else{System.out.println(44Test3”)j)L<=lḄxmg23noSTpq“Test3”Aஹrs0Bஹrsts4Cஹᜧs9Dஹᜧs4rsts9⚪5⚪QH⚪⚪v=wxyzḄᦪA|ᐸAḄᨬᜧᨬrᦪ஺⚪1⚪⌱⚪⚪Jᑡ'(ᑡ᡻f]jḄg#()஺intj=0;for(inti=3;i>0;i--)j+=i;Aஹ3Bஹ4Cஹ5Dஹ6⚪2⚪⌱⚪⚪Jᑡ'(ᑡ᡻f]iḄg#()஺inti=10;

9do{i-=2;}while(i>6);Aஹ10Bஹ8Cஹ6Dஹ4⚪3⚪QH⚪⚪ᡭᓺTᡠᨵḄ“ᦪ"஺ᡠ“ᦪ”#ᢣ<=ᦪ]ᐸᔜᦪḄtsᦪ஺᝞153#<=“ᦪ"]-153=1'+5ஹ+33஺⚪4⚪H▅⚪(᪷_E].¡⊡£)⚪J☢HḄ_E-¤ᦪ¥ᔜᐗ§Ḅ஺publicclassSumArray(inta[]={1,3,5,7,9,10};inttotal;publicstaticvoidmain(Stringargs[J)(total=0;for(inti=0;_______________ji++)total=___________________;}System.out.println(44tota^^+total);)⚪5:⚪H▅⚪(ᑏTHḄ᡻),)⚪publicclassSum{publicstaticvoidmain(StringargsL]){intsum=0;for(inti=1;i<=5;i++)sum+=2+i;

10System.out.println("sum="+sum);))⚪1⚪ᑨ⚪⚪ᐵªcontinue6break—᪵23ᵨsswitch)᪀A஺⚪2⚪▅H⚪⚪ᢣTJᑡHḄ),publicclassBreakTest(publicstaticvoidmain(Stringargs[J)(intcount;for(count=I;count<=10;count++)(if(count==8)break;System.out.println(count);⚪3⚪▅H⚪⚪label_con:for(inti=0;iv5;i++)(for(intj=O;j<5jj++)if(i==j)

11continuelabel_con;System.out.println(i*5+j);)System.out.println(ui=,,+i);)⚪4⚪H▅⚪⚪ᑏTJᑡHḄ),intj=2;switch(j){case2:System.out.println(44Valueistwo.");case3:System.out.println(44Valueisthree.");break;defau11:System.out.prinlln(44valueis"+j);break;}⚪1⚪⚪⚪JavaA®¯'(Ḅ°ᨵL±²$%4&☢ᔣ´µ¶¤·Ạ⚪1⚪ᑨ⚪⚪Java¹ᢝᓫ¼½Z¼½¾²஺⚪2⚪ᑨ⚪⚪z#´ᐹᨵÀFᱯ´µḄ•²Äµ஺⚪3⚪⌱⚪⚪J☢L=⌱⚗D#ÆqḄ᪀ᡂᐗ§7•

12AஹÆqÇᦈὅBஹÌᵨḄÊGÍCஹÊËᦪDஹÆqÎÏὅ⚪4⚪⚪⚪!"#´µz]ÐÑ78ᨵ!"ᐵÒ$⚪5⚪⚪⚪☢ᔣ´µAZ᝱ឋ#ᢣ!"$JavaA#᝞ÕcÖḄ$⚪6⚪⚪⚪!"#×Øឋ$-!"⌕Ùᵨ×ØᢈÛ$⚪1⚪⚪⚪☢ᔣ´µᑖ᪆ḄḄ#!"$⚪2⚪⚪⚪☢ᔣ´µᑖ᪆Ý᝞Õ$⚪1⚪ᑨ⚪⚪☢ᔣ´µ¶¤ḄÞ⌕ßà#H¶¤஺⚪2⚪⚪⚪☢ᔣ´µ¶¤ᒹâL±=▤I]ᐹcäå#!"$%5&JavaAḄ☢ᔣ´µᱯឋ⚪1⚪⌱⚪⚪JᑡÊ?æA]N>Ḅ#hç஺

13Aஹintx(inta,b)Bஹdoublex(inta,intb){return(a-b);}{intw;w=a-b;}Cஹdoublex(a,b)Dஹintx(inta,intb){returnb;}{returna-b;}⚪2⚪⌱⚪⚪ᨵ<=zA,3J-ᐸ᪀⌼ÊḄéê]ᐸAN>Ḅ#()஺AஹvoidA(intx){...}BஹA(intx){...}Cஹa(intx){…}Dஹvoida(intx){...}⚪3⚪⌱⚪⚪´publicvoidadd(inta){...}ÊḄîïÊÝðñAஹòóðñvoidBஹòóðñintCஹ23ðñßÕ◤⌕ḄzDஹ3`ᙳDö⚪4⚪⌱⚪⚪main()ÊḄðñgzAஹòó-voidBஹ23-ß÷zCஹòó-intDஹ3`øÊᙳD´⚪5⚪ᑨ⚪

14⚪îïḄÊ23OPÐÑðñgḄzᩭ9ᑖ஺⚪6⚪QH⚪⚪Qᑏ<=zúÖᙢᙬḄᭆþ]ᒹâḄÿឋᨵ“”“ḕW”,“”“Ḅ᪀⌼஺⚪7⚪▅⚪⚪ᨵ!"᝞$publicclassstudent{Stringname;intage;intscore=88;student(){name="default";)student(Stringa1,inta2,inta3){name=aI;age=a3;score=a2;}}ᙠ&ᵨ(")*&ᵨ$☢,-.ᡂ0("Ḅ12students1=newstudent();students2=newstudent(Hsss",l1,99);3⚪1ஹsi.name,si.age,si.scoreḄ5ᔜ789:2ஹs2.name,s2.age,s2.scoreḄ5ᔜ789:⚪1⚪ᑨ<⚪⚪Javaᙠ=!"Ḅ>)?@("ᑖBᑁDEF஺⚪2⚪⌱H⚪⚪ᙠ89IJ$"?KLMNḄ᪀⌼Aஹ"O)Bஹ"PQᨵRS᪀⌼)Cஹᙠ"PTU0=!᪀⌼)

15DஹZ[\]1⚪3⚪▅⚪⚪$☢7=!"Ḅ^_`ᓄb?Ecᜐ⊡fclassA{intx;A(intx){__=x;))⚪4⚪▅⚪⚪ᑏh᡻jḄklpublicclassUseRef(publicstaticvoidmain(Stringargs[])(MyClass1inyobj,myref;myobj=newMyClassl(-l);myref=myobj;System.out.println(44theoriginaldataisi^+myobj.getDataO);myref.setData(10);System.out.println(k4nowthedataisi^+myobj.getDataO);))MyClass1(intd)intdata;

16MyClass1(intd){data=d;}intgetData(){returndata;}voidsetData(intd){data=d;}}⚪5⚪▅⚪⚪nh$ᑡpjḄklpublicclassstudent{Stringname;intage;student(){this("default”20);)student(Stringa1,inta2){name=a1;age=a2;}publicstaticvoidmain(Stringargs[])(students1=newstudent();System.out.println("name="+sl.name+"age="+sl.age);))⚪1⚪ᑨ<⚪⚪"Ḅqᨵrឋ^qᨵsZOᐸu"12v3஺⚪2⚪ᑨ<⚪

17⚪wxyv3zᑴ|Ḅ}ḕIJ~public^protected⛲|᡽ᜧ0"ᐸrឋ^Ḅv3private⛲|ᑣ0஺⚪3⚪⌱H⚪⚪ᐵOqᨵv3zᑴ|private⛲ḄᡂᕒZ$Ḅ7()஺AஹsZO"ᡠᵨ("ஹwᙠ>=!ᒹPḄᐸ"ஹᙠᐸᒹPḄ("Ḅu"஺BஹsZO"v3^ᵨ("ஹ("Ḅᡠᨵu"஺Cஹ¡O("ᡠv3^ᦋ஺Dஹ¡O>=!ᒹPḄ"v3஺⚪4⚪⌱H⚪⚪"᝞$classA{privateintk=8;intm=0;)classB{publicstaticvoidmain(Stringargs[]){Aa=newA();System.out.println(a.k);))ᑣ$ᑡḄ7Aஹ£hkl@Bஹ¤┯¦8Cஹ£hkl@DஹZ[klᙳ]1

180⚪5⚪¨©⚪⚪ªᐵ«¬public,private,protected^}ḕIJḄ⌕ᵨ^¯ᵨ஺⚪1⚪¨©⚪⚪ᑏ7ᢣ89:Ḅ⌕ᱯ²78=9:⚪2⚪ᑨ<⚪⚪u"]¡³´᱄"Ḅ᪀⌼஺⚪3⚪▅⚪⚪ᑏhpjḄkl஺classParent{voidprintMe(){System.out.println(11Tmparent");))classChildextendsParent{voidprintMe(){System.out.println('*I'mchild");)voidprintA1I(){super.printMe();this.printMe();printMe();

19publicclassTest_this{publicstaticvoidmain(Stringargs[]){Childmyc=newChi1d();myc.printAll();))⚪4⚪⌱H⚪⚪¶(ᙠu"᪀⌼Ḅ89·¸1᱄"Ḅ᪀⌼(super())¹jºᵨAஹu"᪀⌼ḄRSᙢBஹu"᪀⌼Ḅ¼ᩩ,-ᜐCஹu"᪀⌼Ḅᨬ¿=ᩩ,-ᜐDஹ]¡1À"Ḅ᪀⌼¹jºᵨ⚪5⚪ᑨ<⚪⚪$ᑡᔩ:classparent(privateintmine;intgetMine()|returnmine;)Iclasschildextendsparent(intmine;intgetMine(){returnsuper.getMine;}

20⚪1⚪ᑨ<⚪⚪¤Â᝱7ÄÅᑏᩭÇḄ஺⚪2⚪¨©⚪⚪897Â᝱:JavaPᨵÈÂ᝱:⚪3⚪▅⚪⚪ᑏkl஺classVehicle{publicvoiddrive(){System.out.printin("Vehicle:drive'*);))classCarextendsVehicle{publicvoiddrive(){System.out.println(,,Car:drive");})publicclassTest{publicstaticvoidmain(Stringargs[]){Vehiclev;Carc;v=newVehicle();c=newCar();v.drive();c.drive();v=c;v.drive();

21⚪4⚪▅⚪⚪?$ᑡÉᑏÊ᦮ZÌḄᑏ஺classA{intadd(intx,inly){returnx+y;))classB__________{intadd(__________){intx=super(a,b);returnx;))⚪1⚪⌱H⚪⚪ͪÎᵨḄabstractḄÏÐ7Apublicabstractvoidadd();Bpublicabstractvoidadd(){}Cஹpublicabstractadd();Dஹpublicvirtualadd();⚪2⚪⌱H⚪⚪$ᑡ᦮ḄᨬÑrឋiḄPḄ7()஺A>staticfinalinti=100;B>finali;Cஹstaticinti;D>finalfloati=1.2f;

22⚪3⚪ᑨ<⚪⚪final"PḄrឋ^\ÒÓOfinal⛲|⛲஺⚪4⚪ᑨ<⚪⚪Ô2"PTU⌕ᒹÕ!Ô2஺⚪5⚪▅⚪⚪$☢7=!"Ḅ஺class________________//×@myclassḄ"(_____________intvar=666;staticintgetvar(){returnvar;)}⚪1⚪⌱H⚪⚪@0&ᒹSOSᙠØÙPsÚsZ&ᵨḄ,-7()஺Aimportsos.*;Bpackagesos.*;Cincludesos;Dsospackage;⚪2⚪⌱H⚪⚪ᙠᓫ=ᦻÝPimportஹclass^packageḄhÞ7Aஹpackage,import,classB>class,import,packageCஹimport,package,classDஹpackage,class,import⚪3⚪ᑨ<⚪

23⚪]>ᒹPḄ"Ḅ׬sZ~>஺⚪4⚪⌱H⚪⚪nh$ᑡjavaßàṹ//PointxpublicclassInteresting{}ᙠßàṹ஻PoinlxᜐÈ!⌱⚗]|ᔠJava,Aஹimportjava.awt.*;Bஹpackagelocal.util;CஹclassMorelnteresting{}DஹprotectedclassMorelnteresting{}⚪5⚪¨©⚪⚪¨åimport,-Ḅ¯ᵨ஺⚪1⚪ᑨ<⚪⚪æç7ᱯèḄ"ᡠZæçésZO³´uæç?³´᱄æçḄᡠᨵê^Ô2஺⚪2⚪⌱H⚪⚪$ᑡᐵæçḄÈ!7ḄAஹ=!"¡Ì=BஹæçPᡠᨵ\7Ô!æç2ḄCஹæçëF]¡Ì³DஹæçsZᵨ.ᡂÌì´⚪3⚪⌱H⚪⚪interfaceFoo{

24intk=0;publicclassTestimplementsFoo{publicstaticvoidmain(Stringargs[]){inti;Testtest=newTest();i=test.k;i=Test.k;i=Foo.k;))Aஹ0B>1Cஹ2Dஹ3)⚪4⚪,-./⚪⚪0-Java2ᔲ4ᢝ6789:᝞<=4ᢝ>?ᵨABCDᩭFGH:)⚪5⚪,-./⚪⚪0-JKLMNOPQḄSTU2AB:V6XᦪZ)⚪1⚪,-⌱\⚪⚪0-]ᑡ_`abcḄ2-AஹStringtemp[]=newString{"j""a""z"};BஹStringtempU={"j""b""c"}iCஹStringtemp={"a","b","c"}iDஹStringtemp[]={"a","b","c"};

25)⚪2⚪,-⌱\⚪⚪0-kᨵmn_`inta[]={66,88,99;ᑣp]qr_`Ḅst┯vḄ2wx஺Aஹmnz•|}~aḄBஹaᦪZᨵ3|ᐗᦪZDஹᦪZaḄ|ᐗ2CஹaᦪZḄ]᪗~13᦮,)⚪3⚪,-⌱\⚪⚪0-~zmn|᦮,ᦪZalஹa2ஹa3,]☢bcḄ_`2()஺AஹintArray[]a1,a2;BஹintIJa1,a2;intinta3[]={1,2,3,4,5};a3[J={1,2,3,4,5);Cஹinta1,a2[];Dஹint[]a1,a2;inta3={1,2,3,4,5};inta3=(1,2,3,4,5);)⚪4⚪,-▅⚪⚪0-]ᑡḄ<-publicstaticvoidmain(Stringargs[])(intarray[]={1,2,3,4,5);printarray(array);could_modify(array);printarray(array);

26staticvoidcould_modify(inta[1)for(inti=O;i

27AஹintBஹintt2[][]={1,2,3,4,5,6}tl[][]={{l,2},{3,4},{5,6})Cஹintt3[3][2]={1,2,3,4,5,6}Dஹintt4[][];t4={1,2,3,4,5,6})⚪3⚪,-./⚪⚪0-«ᦪZL•ᦪZPQᨵABᐵ:)⚪4⚪,-▅⚪⚪0-]ᑡ>«ᦪZḄᨬ¯Ḅᡠᨵᐗᙳk±~0,²⊡ᐙµ᦮-intarray[][]=newint[3J[3];intj=array.length-1;for(intk=0;_____________;k++))⚪5⚪,-k⚪⚪0-⌕·p«ᦪZ~ᦪ᪀¹ᡭᓺ]ᑡ᪀Ḅ¼-***V7X½¾¿ᜐᳮ)⚪1⚪,-⌱\⚪⚪0-]ᑡ_`a┯vḄ2-

28AஹStringsl=newString{h'e','1','1','o'}BஹStrings2="12345”CஹStrings3=newString(“12345”1,3)DஹStrings4='a';)⚪2⚪,-./⚪⚪0-OStringÂStringBufferḄÃÄ2AB:HÅPQ£pÆÇÈᣚᔩ:ËBÌ:)⚪3⚪,-⌱\⚪⚪0-]ᑡ_`a┯vḄ2-AஹStringBuffersb=newString('a')BஹStringBuffersb1=newStringBuffer();CஹStringBuffersb2=newStringBuffer(20);DஹStringBuffersb3=newStringBuffer(ltsss>>)i)⚪1⚪,-▅⚪⚪0-ᑏḄ<஺publicclasscom{publicstaticvoidmain(Stringargs[]){Strings1=JavaProgrammingStrings2="Javaprogramming^^;Strings3=newString(s2);Strings4=newString஺'Java1234567890");If(s1.equals(s2))System.out.priniln(€tsiequalss2");

29If(sl.equalsIgnoreCase(s2))System.out.println(11siequalss2ignorecase");System.out.println(11si"+',compareTo,,+s3+,,=,,+sl.compareTo(s3));System.out.println(11s2"+',compareTo,,+s3+,,=",+s2.compareTo(s3));System.out.println(11s3,,+,,compareTo,,+s4+,,=,,+s3.compareTo(s4));)))⚪2⚪,-⌱\⚪⚪0-]ᑡ_`a┯vḄ2-A>Strings1=newString{'h','e'1',T','o'}BஹStrings2="12345”CஹStrings3=newString஺'12345”,1,3)DஹStrings4='a';)⚪3⚪,-k⚪⚪0-ᑨ¡|½¾¿2ᔲᐹᨵÐᦻᱯឋ஺ÔÕ-Ðᦻ2Öᦻ½×Ø஺ᨵÖÐᦻÙஹ᎔ᑁÜÆT஺᝞-“ÞßàᩭáᩭàßÞ”ஹ“Þ᝕åæå᝕Þ஺)⚪4⚪,-⌱\⚪⚪0-]ᑡ_`a┯vḄ2-AஹStringBuffersb=newString('a')BஹStringBuffersb1=newStringBuffer();

30CStringBuffersb2=newStringBuffer(20);DஹStringBuffersb3=newStringBuffer(4tsss^);)⚪5⚪,-⌱\⚪⚪0-mnᨵStringBuffersl=newStringBuffer(10);sl.append(“1234")ᑣsl.length()Âsi.capacity஺ᑖÄ26è-Aஹ410Bஹ44Cஹ1010Dஹ104)⚪1⚪,-ᑨ¡⚪⚪0-qStringqNḄéᦋ2qqNëìÌḄ஺)⚪2⚪,-⌱\⚪⚪0-᝞<ᨵStringBuffersb=newStringBuffer(t4IloveJava”)ᑣ᡻GṹStringBuffersbl=sb.insert(8,,,our,,)^sb1Ḅ~-(AஹIloveourJavaBஹIlovejouravaCஹIloveourJavaDஹIlovejaourva)⚪3⚪,-⌱\⚪⚪0-᝞ongB>ngqC>honD>ho)⚪4⚪,-▅⚪

31⚪0-ᑏ]ᑡ

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33System.out.println(sbl);System.out.println(sb2);System.out.println(sb3);)))⚪1⚪,-./⚪⚪0-Javaaü⌕Ḅᒹᨵòþ:ᑖÄᐹᨵABÿᵨ
⚪2:⚪ᑨ⚪⚪᝞ḕ᱄Object஺⚪3:⚪▅⚪⚪ᑏ"#$%publicclassShort{publicstaticvoidmain(Stringargs[]){StringBuffers=newStringBufferC"Helloif((s.length()>5)&&(s.append(44there,,).equals(ttFalse5,)));System.out.printingvalueis"+s);⚪1⚪ᑨ⚪⚪float&FloatḄ(ᵨ)ᐰ᪵,-ᜧ/ᑏḄ01஺

34⚪2⚪▅⚪⚪ᑏ"34Ḅ5"%஺publicclassEqualsMethod{publicstaticvoidmain(String[]args){Integern1=newInteger(47);Integern2=newInteger(47);System.out.print(n1==n2);System.out.print(4<,n)6System.out.println(nl!=n2);))⚪3⚪⌱8⚪⚪᝞9:ᨵBooleana=newBoolean("yes”)ᑣbooleanb=a.booleanValue()fl^J=>A>falseBஹtrueC>yesDஹno⚪4⚪▅⚪⚪@ᑡ⊡ᐙ)᦮publicclasstest{voidshow(Integerk){System.out.println(44thevalue="+_________)6)publicstaticvoidmain(StringargsIJ){testt=newtest();intm=5;

35t.show(n);⚪1⚪⌱8⚪⚪᝞⌕FG⊤IJ73,ᑣᑡKLMJ-NOḄA>Math.pow(3.0,7.0)B>Math.pow(7.0,3.0)CMath.pow(3,7)DஹMath.pow(3,7)⚪2⚪ᑨ⚪⚪MathPᡠᨵRST-☟᝱RSWXY3Z[\]^_ᵨ஺⚪3⚪`F⚪⚪#ᵨMathPḄRSabᦪPḄᨬᜧᦪ஺⚪1⚪⌱8⚪⚪☢K4fṹY3ᡂijVectorklmᔣᐸPpqᦪrAஹVectorv=newVector(99);v[l]=99;BஹVectorv=newVector();v.addElement(99);CஹVectorv=newVector();v.add(99);DஹVectorv=newVector(100);v.addElement("99'');⚪2⚪ᑨ⚪

36⚪ᵫtStack-VectorḄuWXY3vwᐸPxyz{Ḅᐗ}஺⚪3⚪▅⚪⚪᪷ri⊡஺importJava.util.*;publicclassTest{publicstaticvoidmain(Stringargs[]){Vectorv=newVector();v.addElement("one");v.addElement("two'r);v.addElement("three*');Enumeratione=v.elements();while(){Stringob=_______________;System.out.println(ob);)))⚪1⚪⚪⚪SystemRuntimeᑖ1ᑮᵨ
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