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ICSE Class 10 String Handling and Wrapper Classes — practice questions — page 3

Explore 96 free String Handling and Wrapper Classes questions in ICSE Class 10 Computer Applications. Open each question or exercise to read its content, reference answers and available explanation.

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String Handling and Wrapper Classes questions and exercises with answers

Showing questions 61–90 of 96.

Match conversion flow: 1. Prim: p. Raw value 2. Box: q. Heap alloc 3. Obj: r. ReferenceRead the answer and worked solution →Match math classes: 1. Int: p. BigInteger 2. Dec: q. BigDecimal 3. Fixed: r. ImmutableRead the answer and worked solution →Match package roles: 1. Lang: p. Box home 2. Util: q. Obj store 3. Num: r. SuperclassRead the answer and worked solution →Match cost impacts: 1. Heap: p. Allocs 2. GC: q. GC cycle 3. Loop: r. High costRead the answer and worked solution →Match boxing nuance: 1. Up: p. Supported 2. Down: q. Disallowed 3. Equal: r. Ref checkRead the answer and worked solution →Match unbox details: 1. Out: p. Prim copy 2. Drop: q. GC ready 3. Method: r. BytecodeRead the answer and worked solution →Match wrapper roots: 1. Num: p. Superclass 2. Object: q. Top root 3. Char: r. Direct objRead the answer and worked solution →Match type roles: 1. Raw: p. Value type 2. Boxed: q. Ref type 3. Wrap: r. Non-primRead the answer and worked solution →Match auto sum flow: 1. Out: p. Extract 2. Add: q. Prim add 3. In: r. Wrap sumRead the answer and worked solution →Match GC dynamics: 1. Fast: p. HotSpot GC 2. Long: q. Heavy load 3. Heap: r. AllocsRead the answer and worked solution →Match wrapper uses: 1. Gen: p. Type args 2. Call: q. Reflection 3. Map: r. Key objectRead the answer and worked solution →Match atomics: 1. Atom: p. Concurrent 2. Mut: q. Can change 3. Norm: r. ImmutableRead the answer and worked solution →Match string terms: 1. Lit: p. Constant 2. Var: q. Mutable 3. Len: r. Char countRead the answer and worked solution →Match core methods: 1. Len: p. Char count 2. CharAt: q. Pos char 3. Trim: r. StripRead the answer and worked solution →Match mutability: 1. Java: p. Immutable 2. CPP: q. Mutable 3. Python: r. ImmutRead the answer and worked solution →Match case tools: 1. Substr: p. Part str 2. Upper: q. Caps 3. Lower: r. SmallRead the answer and worked solution →Match formal theory: 1. Empty: p. No chars 2. Alpha: q. Symbols 3. Str: r. SequenceRead the answer and worked solution →Match string find: 1. Index: p. First pos 2. Last: q. Final pos 3. Substr: r. SliceRead the answer and worked solution →Match mut builders: 1. Builder: p. Faster 2. Buffer: q. Safe 3. Cocoa: r. MutStrRead the answer and worked solution →Match text roles: 1. Msg: p. User text 2. DNA: q. Nucleic 3. URL: r. Query paramRead the answer and worked solution →Match check forms: 1. Equals: p. Boolean 2. Cmp: q. Signed int 3. Ignore: r. CaseRead the answer and worked solution →Match formats: 1. Null: p. Zero byte 2. Prefix: q. Length 3. Dope: r. VectorRead the answer and worked solution →Match encodings: 1. ASCII: p. 1 byte 2. Unicode: q. Global 3. UTF8: r. StreamRead the answer and worked solution →Match operations: 1. Concat: p. Join 2. Rev: q. Invert 3. Len: r. Char countRead the answer and worked solution →Match memory alloc: 1. Static: p. Fixed 2. Dynamic: q. Grow 3. Lit: r. AnonymousRead the answer and worked solution →Match string roots: 1. COMIT: p. 1950s 2. SNOBOL: q. 1960s 3. Print: r. TypesetRead the answer and worked solution →Match substr params: 1. Start: p. Index 2. End: q. Stop pos 3. Slice: r. Copy partRead the answer and worked solution →Match type models: 1. Prim: p. JS PHP 2. Comp: q. Java C# 3. List: r. ErlangRead the answer and worked solution →Match sub-strings: 1. Prefix: p. Start 2. Suffix: q. End 3. Factor: r. SliceRead the answer and worked solution →Match compare cost: 1. Equals: p. Bool 2. Cmp: q. Int result 3. C-str: r. CostlyRead the answer and worked solution →

Worked practice questions

Match conversion flow: 1. Prim: p. Raw value 2. Box: q. Heap alloc 3. Obj: r. Reference

  1. 1-p, 2-q, 3-r
  2. 1-p, 2-r, 3-q
  3. 1-q, 2-p, 3-r
  4. 1-r, 2-p, 3-q
Show answer and solution

Correct answer: A. 1-p, 2-q, 3-r

Boxing allocates a heap object to store a copy of the primitive value, returning an object reference.

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Match math classes: 1. Int: p. BigInteger 2. Dec: q. BigDecimal 3. Fixed: r. Immutable

  1. 1-p, 2-q, 3-r
  2. 1-p, 2-r, 3-q
  3. 1-q, 2-p, 3-r
  4. 1-r, 2-p, 3-q
Show answer and solution

Correct answer: A. 1-p, 2-q, 3-r

BigInteger and BigDecimal provide arbitrary-precision arithmetic, and like primitive wrappers, their instances are immutable.

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Match package roles: 1. Lang: p. Box home 2. Util: q. Obj store 3. Num: r. Superclass

  1. 1-p, 2-q, 3-r
  2. 1-p, 2-r, 3-q
  3. 1-q, 2-p, 3-r
  4. 1-r, 2-p, 3-q
Show answer and solution

Correct answer: A. 1-p, 2-q, 3-r

Primitive wrapper classes reside in java.lang, collection frameworks store objects, and Number acts as the abstract superclass.

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