单项选择题X 纠错
程序: classTestApp{ public static void main (String[] args){ int X=5: switch (x){ case l: case 2: case 3: System. out.println(“一季度”); break; case 4: case 5: case 6: System. out.println(“二季度”); break;default:System. out.println(“三季度以上”); break; ) } ) 上述程序运行后的结果是哪项?()
A.一季度 B.二季度 C.三季度以上 D.无输出
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单项选择题
A.array.size B.array.length-l C.array.size-l D.array.length
多项选择题
A.ints[10]; B.int[10]s; C.int[5]s={l,2,3,4,5}; D.ints[];
现有: class TestApp{ public static void main (String[] args){ int [5] myarray={ 10, 11, 12, 13, 14); int sum=0; for (int x : myarray) sum+=x; System. out. println( "sum= "+sum); } } 上述程序运行后的结果是哪项?()
A.sum=10 B.sum=70 C.sum=60 D.运行时抛出异常
程序: class TestApp{ public static void main (String[] args){ int x=6; if (x>l) System. out. println("x>l"); else if (x>5) System. out .println("x>5"); else if (x<10) System. out. println("xelse if (x<29) System. out .println( "x<29"); else System. out.println(“以上都不是”); } } 上述程序运行后的结果是哪项?()
A.x>5 B.x>l C.x<10 D.x<29
现有: class TestApp{ public static void main (String[] args){ for (int i=0; iif(i==3) break; System. out .print (i); } } } 程序运行后的输出是哪项?()
A.0123 B.012456789 C.0123456789 D.012
A.Integer B.Double C.Float D.Character
A.123456 B.579 C.编译错误 D.运行时抛出异常
A.a=1; B.C=a+b; C.a+=2; D.shorta,b,C;
现有: 1. class Wrench f 2.public static void main(String [] args) { 3.Wrench w=new Wrench(); Wrench w2=new Wrench(); 4. w2=go (w, w2); 5.System.out.print (w2==w); 6. } 7.static Wrench go (Wrench wrl, Wrench wr2) { 8.Wrench wr3=wrl; wrl=wr2; wr2=wr3; 9. return wr3; 10. } 11. } 结果是什么?()
A.false B.true C.编译失败 D.运行的时候有异常抛出
现有: 1.class Passer f 2.static final int X=5; 3.public static void main (String [] args) { 4.new Passer().go (x); 5.System. out .print (x); 6. ) 7.void go (int x) { 8.System. out .print(x++); 9.} 10.}结果是什么?()
A.55 B.56 C.65 D.66
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