Based on Bill Verners' Inside the Java Virtual Machine, McGraw Hill Companies, 1997

caload - Load char from array

opcode:  52 (0x34)   usage: caload   stack before: ..., arrayref, i stack after:..., value   description: The Java Virtual Machine takes two top words from the stack. Arrayref must a reference to a char array  and i must be an integer. As a result virtual machine pushes char value from index i of array arrayref on the stack. exceptions: NullPointerException - arrayref is null ArrayIndexOutOfBoundsException - i is not a legal array index

castore - Store into char array

opcode:  85 (0x55)   usage: castore   stack before: ..., arrayref, i, value stack after: ...   description: The Java Virtual Machine stores byte value in index i of array arrayref. Arrayref must be a char array, i must be an integer and value must be a char. exceptions: NullPointerException - arrayref is null ArrayIndexOutOfBoundsException - i is not a legal array index ArrayStoreException - value is not a char

checkcast - Make sure object is of given type

opcode:  192 (0xc0)   usage: checkcast class   stack before: ..., objectref stack after: ..., objectref   description: The top word of the stack, objectref, must be a reference. If objectref is null or if objectref can be cast to the class, the stack remains unchanged. Otherwise, the virtual machine throws ClassCastException. exceptions: ClassCastException - objectref cannot be cast to class